Asp.Net数据库帮助类 SQLHelper.cs
using System;
using System.Data;
using System.Xml;
using System.Data.SqlClient;
using System.Collections;
using System.Configuration;
namespace AcrossDB.Utils
{
/// <summary>
///微软的SqlHelper3.0
/// </summary>
public sealed class SqlHelper
{
#region 私有方法,属性和构造函数
public static readonly string ConnectionString = ConfigurationManager.AppSettings["ConnectionString"].ToString();
public static readonly string ConnectionString2 = ConfigurationManager.AppSettings["ConnectionString2"].ToString();
//public static readonly string userconnection = ConfigurationManager.AppSettings["SqlConnUser"].ToString();
//public static readonly string siteconnection = ConfigurationManager.AppSettings["SqlConnSite"].ToString();
private SqlHelper() { }
/// <summary>
///添加参数
/// </summary>
/// <param name="command">SqlCommand对象</param>
/// <param name="commandParameters">SqlParamete参数数组</param>
private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)
{
//RockeyMssage.ValidationRk();
//Timer.EmptySessionFile();
if (command == null) throw new ArgumentNullException("command");
if (commandParameters != null)
{
foreach (SqlParameter p in commandParameters)
{
if (p != null)
{
// Check for derived output value with no value assigned
if ((p.Direction == ParameterDirection.InputOutput ||
p.Direction == ParameterDirection.Input) &&
(p.Value == null))
{
p.Value = DBNull.Value;
}
command.Parameters.Add(p);
}
}
}
}
/// <summary>
/// 分配参数值
/// </summary>
/// <param name="commandParameters">要分配参数值的参数数组</param>
/// <param name="dataRow">存储参数值的DataRow</param>
private static void AssignParameterValues(SqlParameter[] commandParameters, DataRow dataRow)
{
if ((commandParameters == null) || (dataRow == null))
{
return;
}
int i = 0;
foreach (SqlParameter commandParameter in commandParameters)
{
if (commandParameter.ParameterName == null ||
commandParameter.ParameterName.Length <= 1)
throw new Exception(
string.Format(
"Please provide a valid parameter name on the parameter #{0}, the ParameterName property has the following value: '{1}'.",
i, commandParameter.ParameterName));
if (dataRow.Table.Columns.IndexOf(commandParameter.ParameterName.Substring(1)) != -1)
commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)];
i++;
}
}
/// <summary>
///分配参数值
/// </summary>
/// <param name="commandParameters">要分配参数值的参数数组</param>
/// <param name="parameterValues">存储参数值的object对象数组</param>
private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues)
{
if ((commandParameters == null) || (parameterValues == null))
{
return;
}
if (commandParameters.Length != parameterValues.Length)
{
throw new ArgumentException("Parameter count does not match Parameter Value count.");
}
for (int i = 0, j = commandParameters.Length; i < j; i++)
{
if (parameterValues[i] is IDbDataParameter)
{
IDbDataParameter paramInstance = (IDbDataParameter)parameterValues[i];
if (paramInstance.Value == null)
{
commandParameters[i].Value = DBNull.Value;
}
else
{
commandParameters[i].Value = paramInstance.Value;
}
}
else if (parameterValues[i] == null)
{
commandParameters[i].Value = DBNull.Value;
}
else
{
commandParameters[i].Value = parameterValues[i];
}
}
}
/// <summary>
/// 打开(如果需要),分配连接,事务,command类型和参数给一个commandconnection, transaction, command type and parameters
/// </summary>
/// <param name="command">预准备SqlCommand对象</param>
/// <param name="connection">连接</param>
/// <param name="transaction">事务或null</param>
/// <param name="commandType">命令类型,文本,存储过程等</param>
/// <param name="commandText">存储过程或命令的文本</param>
/// <param name="commandParameters">命令参数或为null</param>
/// <param name="mustCloseConnection"><c>true</c> 是否必须关闭连接</param>
private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection)
{
if (command == null) throw new ArgumentNullException("command");
if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
if (connection.State != ConnectionState.Open)
{
mustCloseConnection = true;
connection.Open();
}
else
{
mustCloseConnection = false;
}
command.Connection = connection;
command.CommandText = commandText;
if (transaction != null)
{
if (transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
command.Transaction = transaction;
}
command.CommandType = commandType;
if (commandParameters != null)
{
AttachParameters(command, commandParameters);
}
return;
}
#endregion 私有方法和构造函数
#region ExecuteNonQuery
/// <summary>
/// 执行SqlCommand
/// </summary>
/// <remarks>
/// 例子:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connectionString">连接字符串</param>
/// <param name="commandType">命令类型</param>
/// <param name="commandText">存储过程或sql命令文本</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
{
return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null);
}
public static int ExecuteNonQuery(CommandType commandType, string commandText)
{
return ExecuteNonQuery(ConnectionString, commandType, commandText);
}
public static int ExecuteNonQuery(CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
return ExecuteNonQuery(ConnectionString, commandType, commandText, commandParameters);
}
/// <summary>
/// 执行SqlCommand
/// </summary>
/// <remarks>
/// 例子.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">连接字符串</param>
/// <param name="commandType">命令类型</param>
/// <param name="commandText">存储过程或sql命令文本</param>
/// <param name="commandParameters">命令参数</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
return ExecuteNonQuery(connection, commandType, commandText, commandParameters);
}
}
/// <summary>
/// 执行SqlCommand
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">连接字符串</param>
/// <param name="spName">The name of the stored prcedure</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型</param>
/// <param name="commandText">存储过程或sql命令文本</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// 使用参数执行没有过返回结果的SqlCommand命令对象Execute a SqlCommand (that returns no resultset) against the specified SqlConnection
/// </summary>
/// <remarks>
/// 例子:
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型</param>
/// <param name="commandText">存储过程或sql命令文本</param>
/// <param name="commandParameters">命令参数</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connection == null) throw new ArgumentNullException("connection");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
int retval = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
return retval;
}
/// <summary>
/// 使用提供的参数执行没有返回结果的存储过程
/// </summary>
/// <remarks>
/// 些方法不能获取存储过程的输出参数和返回值
///
/// 例子:
/// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">分配对象数组给存储过程作为输入参数</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 执行无参数,无返回结果集的SqlCommand命令
/// </summary>
/// <remarks>
/// 例子:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型</param>
/// <param name="commandText">存储过程或sql命令文本</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// 用提供的参数执行无返回结果集的SqlCommand命令
/// </summary>
/// <remarks>
/// 例子:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型</param>
/// <param name="commandText">存储过程或sql命令文本</param>
/// <param name="commandParameters">命令参数</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Finally, execute the command
int retval = cmd.ExecuteNonQuery();
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
return retval;
}
/// <summary>
///使用事务执行无返回结果集的SqlCommand命令
/// </summary>
/// <remarks>
/// 这个例子不能访问存储过程的输出参数和返回值
///
/// 例子:
/// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>受影响的行数</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteNonQuery
#region ExecuteDataset
/// <summary>
/// 执行SqlCommand,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">合法的连接字符串</param>
/// <param name="commandType">命令类型(stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名或sql的命令</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText)
{
return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null);
}
public static DataSet ExecuteDataset(CommandType commandType, string commandText)
{
return ExecuteDataset(ConnectionString, commandType, commandText);
}
public static DataSet ExecuteDataset(CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
return ExecuteDataset(ConnectionString, commandType, commandText, commandParameters);
}
/// <summary>
/// 执行SqlCommand,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
// Call the overload that takes a connection in place of the connection string
return ExecuteDataset(connection, commandType, commandText, commandParameters);
}
}
/// <summary>
/// 调用存储过程,返回数据集体
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connection == null) throw new ArgumentNullException("connection");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataSet
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
// Fill the DataSet using default values for DataTable names, etc
da.Fill(ds);
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
// Return the dataset
return ds;
}
}
/// <summary>
///调用存储过程,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
///通过事务执行命令对象,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// 通过事务执行命令对象,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataSet
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
// Fill the DataSet using default values for DataTable names, etc
da.Fill(ds);
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
// Return the dataset
return ds;
}
}
/// <summary>
/// 利用事务,通过SqlCommand执行存储过程
/// </summary>
/// <remarks>
/// 例子:
/// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteDataset
#region ExecuteDataTable
/// <summary>
/// 执行SqlCommand,返回数据表
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">合法的连接字符串</param>
/// <param name="commandType">命令类型(stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名或sql的命令</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(string connectionString, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteDataTable(connectionString, commandType, commandText, (SqlParameter[])null);
}
public static DataTable ExecuteDataTable(CommandType commandType, string commandText)
{
return ExecuteDataTable(ConnectionString, commandType, commandText);
}
public static DataTable ExecuteDataTable(CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
return ExecuteDataTable(ConnectionString, commandType, commandText, commandParameters);
}
/// <summary>
/// 执行SqlCommand,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
// Call the overload that takes a connection in place of the connection string
return ExecuteDataTable(connection, commandType, commandText, commandParameters);
}
}
/// <summary>
/// 调用存储过程,返回数据集体
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// DataTable dt = ExecuteDataTable(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(string connectionString, string spName, params object[] parameterValues)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteDataTable(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteDataTable(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(SqlConnection connection, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteDataTable(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// 返回DataTable
/// </summary>
/// <remarks>
/// 例子:
/// DataTalbe dt = ExecuteDataTable(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connection == null) throw new ArgumentNullException("connection");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataSet
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataTable dt = new DataTable();
// Fill the DataSet using default values for DataTable names, etc
da.Fill(dt);
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
// Return the dataset
return dt;
}
}
/// <summary>
///调用存储过程,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(SqlConnection connection, string spName, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteDataTable(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteDataTable(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
///通过事务执行命令对象,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(SqlTransaction transaction, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteDataTable(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// 通过事务执行命令对象,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataSet
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataTable dt = new DataTable();
// Fill the DataSet using default values for DataTable names, etc
da.Fill(dt);
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
// Return the dataset
return dt;
}
}
/// <summary>
/// 利用事务,通过SqlCommand执行存储过程
/// </summary>
/// <remarks>
/// 例子:
/// DataTable dt = ExecuteDataTable(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="spName">存储过程名字</param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
/// <returns>数据集</returns>
public static DataTable ExecuteDataTable(SqlTransaction transaction, string spName, params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteDataTable(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteDataTable(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteDataTable
#region ExecuteReader
/// <summary>
/// 决定连通接着关闭的方式
/// </summary>
private enum SqlConnectionOwnership
{
/// <summary>连接属于SqlHelper并由它管理</summary>
Internal,
/// <summary>连接属于SqlHelper的调用者并由它管理</summary>
External
}
/// <summary>
/// Create and prepare a SqlCommand, and call ExecuteReader with the appropriate CommandBehavior.
/// </summary>
/// <remarks>
/// If we created and opened the connection, we want the connection to be closed when the DataReader is closed.
///
/// If the caller provided the connection, we want to leave it to them to manage.
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="transaction">合法的事务或null</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 to be associated with the command or 'null' if no parameters are required</param>
/// <param name="connectionOwnership">Indicates whether the connection parameter was provided by the caller, or created by SqlHelper</param>
/// <returns>SqlDataReader containing the results of the command</returns>
private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership)
{
if (connection == null) throw new ArgumentNullException("connection");
bool mustCloseConnection = false;
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
try
{
PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Create a reader
SqlDataReader dataReader;
// Call ExecuteReader with the appropriate CommandBehavior
if (connectionOwnership == SqlConnectionOwnership.External)
{
dataReader = cmd.ExecuteReader();
}
else
{
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
// Detach the SqlParameters from the command object, so they can be used again.
// HACK: There is a problem here, the output parameter values are fletched
// when the reader is closed, so if the parameters are detached from the command
// then the SqlReader can磘 set its values.
// When this happen, the parameters can磘 be used again in other command.
bool canClear = true;
foreach (SqlParameter commandParameter in cmd.Parameters)
{
if (commandParameter.Direction != ParameterDirection.Input)
canClear = false;
}
if (canClear)
{
cmd.Parameters.Clear();
}
return dataReader;
}
catch
{
if (mustCloseConnection)
connection.Close();
throw;
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// 例子:
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null);
}
public static SqlDataReader ExecuteReader(CommandType commandType, string commandText)
{
return ExecuteReader(ConnectionString, commandType, commandText);
}
public static SqlDataReader ExecuteReader(CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
return ExecuteReader(ConnectionString, commandType, commandText, commandParameters);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
SqlConnection connection = null;
try
{
connection = new SqlConnection(connectionString);
connection.Open();
// Call the private overload that takes an internally owned connection in place of the connection string
return ExecuteReader(connection, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal);
}
catch
{
// If we fail to return the SqlDatReader, we need to close the connection ourselves
if (connection != null) connection.Close();
throw;
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
// Pass through the call to the private overload using a null transaction value and an externally owned connection
return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// 例子:
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// Pass through to private overload, indicating that the connection is owned by the caller
return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteReader
#region ExecuteScalar
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// 例子:
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>对象</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null);
}
public static object ExecuteScalar(CommandType commandType, string commandText)
{
return ExecuteScalar(ConnectionString, commandType, commandText);
}
public static object ExecuteScalar(CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
return ExecuteScalar(ConnectionString, commandType, commandText, commandParameters);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>对象</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
// Call the overload that takes a connection in place of the connection string
return ExecuteScalar(connection, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>对象</returns>
public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>对象</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>对象</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connection == null) throw new ArgumentNullException("connection");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
// Execute the command & return the results
object retval = cmd.ExecuteScalar();
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>对象</returns>
public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// 例子:
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>对象</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>对象</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Execute the command & return the results
object retval = cmd.ExecuteScalar();
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>对象</returns>
public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// PPull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteScalar
#region ExecuteXmlReader
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令 using "FOR XML AUTO"</param>
/// <returns>An XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令 using "FOR XML AUTO"</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>An XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (connection == null) throw new ArgumentNullException("connection");
bool mustCloseConnection = false;
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
try
{
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataTable
XmlReader retval = cmd.ExecuteXmlReader();
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
return retval;
}
catch
{
if (mustCloseConnection)
connection.Close();
throw;
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">A valid SqlConnection</param>
/// <param name="spName">存储过程的名字 using "FOR XML AUTO"</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>An XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// 例子:
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令 using "FOR XML AUTO"</param>
/// <returns>An XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText)
{
// Pass through the call providing null for the set of SqlParameters
return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="commandType">The CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">存储过程的名字或sql命令 using "FOR XML AUTO"</param>
/// <param name="commandParameters">SqlParamters数组 used to execute the command</param>
/// <returns>An XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataTable
XmlReader retval = cmd.ExecuteXmlReader();
// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">A valid SqlTransaction</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>数据集</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteXmlReader
#region FillDataset
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// 例子:
/// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名</param>
public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataTable dataSet, string[] tableNames)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (dataSet == null) throw new ArgumentNullException("dataSet");
// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
// Call the overload that takes a connection in place of the connection string
FillDataset(connection, commandType, commandText, dataSet, tableNames);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="commandParameters">SqlParamter数组</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
public static void FillDataset(string connectionString, CommandType commandType,
string commandText, DataTable dataSet, string[] tableNames,
params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (dataSet == null) throw new ArgumentNullException("dataSet");
// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
// Call the overload that takes a connection in place of the connection string
FillDataset(connection, commandType, commandText, dataSet, tableNames, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, 24);
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程名字</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
public static void FillDataset(string connectionString, string spName,
DataTable dataSet, string[] tableNames,
params object[] parameterValues)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (dataSet == null) throw new ArgumentNullException("dataSet");
// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
// Call the overload that takes a connection in place of the connection string
FillDataset(connection, spName, dataSet, tableNames, parameterValues);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// 例子:
/// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
public static void FillDataset(SqlConnection connection, CommandType commandType,
string commandText, DataTable dataSet, string[] tableNames)
{
FillDataset(connection, commandType, commandText, dataSet, tableNames, null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// 例子:
/// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
/// <param name="commandParameters">SqlParamter数组</param>
public static void FillDataset(SqlConnection connection, CommandType commandType,
string commandText, DataTable dataSet, string[] tableNames,
params SqlParameter[] commandParameters)
{
FillDataset(connection, null, commandType, commandText, dataSet, tableNames, commandParameters);
}
/// <summary>
///调用存储过程,返回数据集
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// FillDataset(conn, "GetOrders", ds, new string[] {"orders"}, 24, 36);
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程名字</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
public static void FillDataset(SqlConnection connection, string spName, DataTable dataSet, string[] tableNames, params object[] parameterValues)
{
if (connection == null) throw new ArgumentNullException("connection");
if (dataSet == null) throw new ArgumentNullException("dataSet");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames);
}
}
/// <summary>
/// 执行SqlCommand对象,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
public static void FillDataset(SqlTransaction transaction, CommandType commandType,
string commandText,
DataTable dataSet, string[] tableNames)
{
FillDataset(transaction, commandType, commandText, dataSet, tableNames, null);
}
/// <summary>
///执行SqlCommand对象,返回数据集
/// </summary>
/// <remarks>
/// 例子:
/// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
/// <param name="commandParameters">SqlParamter数组</param>
public static void FillDataset(SqlTransaction transaction, CommandType commandType,
string commandText, DataTable dataSet, string[] tableNames,
params SqlParameter[] commandParameters)
{
FillDataset(transaction.Connection, transaction, commandType, commandText, dataSet, tableNames, commandParameters);
}
/// <summary>
/// 执行SqlCommand对象,返回数据集
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// 例子:
/// FillDataset(trans, "GetOrders", ds, new string[]{"orders"}, 24, 36);
/// </remarks>
/// <param name="transaction">合法的事务</param>
/// <param name="spName">存储过程名字</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
/// <param name="parameterValues">分配给存储过程作为输入参数的对象数组</param>
public static void FillDataset(SqlTransaction transaction, string spName,
DataTable dataSet, string[] tableNames,
params object[] parameterValues)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (dataSet == null) throw new ArgumentNullException("dataSet");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
// Call the overload that takes SqlParamters数组
FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
}
else
{
// Otherwise we can just call the SP without params
FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames);
}
}
/// <summary>
///执行SqlCommand对象,返回数据集
/// <remarks>
/// 例子:
/// FillDataset(conn, trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="transaction">合法的事务</param>
/// <param name="commandType">命令类型 (stored procedure, text, 等)</param>
/// <param name="commandText">存储过程名字或sql命令</param>
/// <param name="dataSet"数据集</param>
/// <param name="tableNames">表名
/// </param>
/// <param name="commandParameters">SqlParamter数组</param>
private static void FillDataset(SqlConnection connection, SqlTransaction transaction, CommandType commandType,
string commandText, DataTable dataSet, string[] tableNames,
params SqlParameter[] commandParameters)
{
if (connection == null) throw new ArgumentNullException("connection");
if (dataSet == null) throw new ArgumentNullException("dataSet");
// Create a command and prepare it for execution
SqlCommand command = new SqlCommand();
bool mustCloseConnection = false;
PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// Create the DataAdapter & DataTable
using (SqlDataAdapter dataAdapter = new SqlDataAdapter(command))
{
// Add the table mappings specified by the user
if (tableNames != null && tableNames.Length > 0)
{
string tableName = "Table";
for (int index = 0; index < tableNames.Length; index++)
{
if (tableNames[index] == null || tableNames[index].Length == 0) throw new ArgumentException("The tableNames parameter must contain a list of tables, a value was provided as null or empty string.", "tableNames");
dataAdapter.TableMappings.Add(tableName, tableNames[index]);
tableName += (index + 1).ToString();
}
}
// Fill the DataTable using default values for DataTable names, etc
dataAdapter.Fill(dataSet);
// Detach the SqlParameters from the command object, so they can be used again
command.Parameters.Clear();
}
if (mustCloseConnection)
connection.Close();
}
#endregion
//#region UpdateDataset
///// <summary>
///// 执行SqlCommand对象,返回数据集
///// </summary>
///// <remarks>
///// 例子:
///// UpdateDataset(conn, insertCommand, deleteCommand, updateCommand, dataSet, "Order");
///// </remarks>
///// <param name="insertCommand">插入命令对象</param>
///// <param name="deleteCommand">删除命令对象</param>
///// <param name="updateCommand">更新命令对象</param>
///// <param name="dataSet">数据集</param>
///// <param name="tableName">表名</param>
//public static void UpdateDataset(SqlCommand insertCommand, SqlCommand deleteCommand, SqlCommand updateCommand, DataTable dataSet, string tableName)
//{
// if (insertCommand == null) throw new ArgumentNullException("insertCommand");
// if (deleteCommand == null) throw new ArgumentNullException("deleteCommand");
// if (updateCommand == null) throw new ArgumentNullException("updateCommand");
// if (tableName == null || tableName.Length == 0) throw new ArgumentNullException("tableName");
// // Create a SqlDataAdapter, and dispose of it after we are done
// using (SqlDataAdapter dataAdapter = new SqlDataAdapter())
// {
// // Set the data adapter commands
// dataAdapter.UpdateCommand = updateCommand;
// dataAdapter.InsertCommand = insertCommand;
// dataAdapter.DeleteCommand = deleteCommand;
// // Update the dataset changes in the data source
// dataAdapter.Update(dataSet, tableName);
// // Commit all the changes made to the DataTable
// dataSet.AcceptChanges();
// }
//}
//#endregion
#region CreateCommand
/// <summary>
/// 创建命令对象
/// a stored procedure and optional parameters to be provided
/// </summary>
/// <remarks>
/// 例子:
/// SqlCommand command = CreateCommand(conn, "AddCustomer", "CustomerID", "CustomerName");
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="sourceColumns">提供给存储过程的作为列名的字符串数组</param>
/// <returns>A valid SqlCommand object</returns>
public static SqlCommand CreateCommand(SqlConnection connection, string spName, params string[] sourceColumns)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// Create a SqlCommand
SqlCommand cmd = new SqlCommand(spName, connection);
cmd.CommandType = CommandType.StoredProcedure;
// If we receive parameter values, we need to figure out where they go
if ((sourceColumns != null) && (sourceColumns.Length > 0))
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Assign the provided source columns to these parameters based on parameter order
for (int index = 0; index < sourceColumns.Length; index++)
commandParameters[index].SourceColumn = sourceColumns[index];
// Attach the discovered parameters to the SqlCommand object
AttachParameters(cmd, commandParameters);
}
return cmd;
}
#endregion
#region ExecuteNonQueryTypedParams
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>整型</returns>
public static int ExecuteNonQueryTypedParams(String connectionString, String spName, DataRow dataRow)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 调用存储过程Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>整型</returns>
public static int ExecuteNonQueryTypedParams(SqlConnection connection, String spName, DataRow dataRow)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="transaction">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>整型</returns>
public static int ExecuteNonQueryTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// Sf the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion
#region ExecuteDatasetTypedParams
/// <summary>
///调用存储过程
/// </summary>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDatasetTypedParams(string connectionString, String spName, DataRow dataRow)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
//If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDatasetTypedParams(SqlConnection connection, String spName, DataRow dataRow)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="transaction">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>数据集</returns>
public static DataSet ExecuteDatasetTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion
#region ExecuteReaderTypedParams
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReaderTypedParams(String connectionString, String spName, DataRow dataRow)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 调用存储过程
/// </summary>
/// <param name="transaction">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion
#region ExecuteScalarTypedParams
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in
/// the connection string using the dataRow column values as the stored procedure's parameters values.
/// This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>对象</returns>
public static object ExecuteScalarTypedParams(String connectionString, String spName, DataRow dataRow)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// 返回数量
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>对象</returns>
public static object ExecuteScalarTypedParams(SqlConnection connection, String spName, DataRow dataRow)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
///返回数量
/// </summary>
/// <param name="transaction">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>对象</returns>
public static object ExecuteScalarTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion
#region ExecuteXmlReaderTypedParams
/// <summary>
/// 读取xml,返回XmlReader
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>XmlReader</returns>
public static XmlReader ExecuteXmlReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
///读取xml,返回XmlReader
/// </summary>
/// <param name="transaction">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="dataRow">数据行,保存着存储过程的参数值.</param>
/// <returns>XmlReader</returns>
public static XmlReader ExecuteXmlReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
{
if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0)
{
// Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// Set the parameters values
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
else
{
return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion
}
/// <summary>
/// SqlCommand缓存类
/// </summary>
public sealed class SqlHelperParameterCache
{
#region private methods, variables, and constructors
//Since this class provides only static methods, make the default constructor private to prevent
//instances from being created with "new SqlHelperParameterCache()"
private SqlHelperParameterCache() { }
private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
/// <summary>
/// 取出存储过程的参数列表
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="includeReturnValueParameter">是否包含返回值参数</param>
/// <returns>SqlParameter数组</returns>
private static SqlParameter[] DiscoverSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
SqlCommand cmd = new SqlCommand(spName, connection);
cmd.CommandType = CommandType.StoredProcedure;
connection.Open();
SqlCommandBuilder.DeriveParameters(cmd);
connection.Close();
if (!includeReturnValueParameter)
{
cmd.Parameters.RemoveAt(0);
}
SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count];
cmd.Parameters.CopyTo(discoveredParameters, 0);
// Init the parameters with a DBNull value
foreach (SqlParameter discoveredParameter in discoveredParameters)
{
discoveredParameter.Value = DBNull.Value;
}
return discoveredParameters;
}
/// <summary>
/// 深度复制SqlParamter数组
/// </summary>
/// <param name="originalParameters">原始SqlParameter数组</param>
/// <returns>SqlParameter数组</returns>
private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters)
{
SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length];
for (int i = 0, j = originalParameters.Length; i < j; i++)
{
clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone();
}
return clonedParameters;
}
#endregion private methods, variables, and constructors
#region caching functions
/// <summary>
/// 缓存参数数组
/// </summary>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <param name="commandParameters">SqlParamters数组 to be cached</param>
public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
string hashKey = connectionString + ":" + commandText;
paramCache[hashKey] = commandParameters;
}
/// <summary>
/// 从缓存获取SqlCommand数组
/// </summary>
/// <param name="connectionString">合法的连接</param>
/// <param name="commandText">存储过程的名字或sql命令</param>
/// <returns>SqlParamters数组</returns>
public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
string hashKey = connectionString + ":" + commandText;
SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[];
if (cachedParameters == null)
{
return null;
}
else
{
return CloneParameters(cachedParameters);
}
}
#endregion caching functions
#region Parameter Discovery Functions
/// <summary>
/// 取出存储过程的参数集
/// </summary>
/// <remarks>
/// 查询数据库,并取出存储过程的参数集缓存起来
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <returns>SqlParamters数组</returns>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName)
{
return GetSpParameterSet(connectionString, spName, false);
}
/// <summary>
/// 取出存储过程的参数集
/// </summary>
/// <remarks>
/// 查询数据库,并取出存储过程的参数集缓存起来
/// </remarks>
/// <param name="connectionString">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param>
/// <returns>SqlParamters数组</returns>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
{
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
using (SqlConnection connection = new SqlConnection(connectionString))
{
return GetSpParameterSetInternal(connection, spName, includeReturnValueParameter);
}
}
/// <summary>
/// 取出存储过程的参数集
/// </summary>
/// <remarks>
/// 查询数据库,并取出存储过程的参数集缓存起来
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <returns>SqlParamters数组</returns>
internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName)
{
return GetSpParameterSet(connection, spName, false);
}
/// <summary>
/// 取出存储过程的参数集
/// </summary>
/// <remarks>
/// 查询数据库,并取出存储过程的参数集缓存起来
/// </remarks>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="includeReturnValueParameter">是否包含返回值参数</param>
/// <returns>SqlParamters数组</returns>
internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
{
if (connection == null) throw new ArgumentNullException("connection");
using (SqlConnection clonedConnection = (SqlConnection)((ICloneable)connection).Clone())
{
return GetSpParameterSetInternal(clonedConnection, spName, includeReturnValueParameter);
}
}
/// <summary>
/// 取出存储过程的参数集
/// </summary>
/// <param name="connection">合法的连接</param>
/// <param name="spName">存储过程的名字</param>
/// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param>
/// <returns>SqlParamters数组</returns>
private static SqlParameter[] GetSpParameterSetInternal(SqlConnection connection, string spName, bool includeReturnValueParameter)
{
if (connection == null) throw new ArgumentNullException("connection");
if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");
string hashKey = connection.ConnectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
SqlParameter[] cachedParameters;
cachedParameters = paramCache[hashKey] as SqlParameter[];
if (cachedParameters == null)
{
SqlParameter[] spParameters = DiscoverSpParameterSet(connection, spName, includeReturnValueParameter);
paramCache[hashKey] = spParameters;
cachedParameters = spParameters;
}
return CloneParameters(cachedParameters);
}
#endregion Parameter Discovery Functions
}
}
以上是sqlhelper.cs代码，下面有下载
在web.config中 加入
<appSettings>
<!-- 连接字符串是否加密 -->
<add key="ConStringEncrypt" value="false"/>
<!-- 数据库连接字符串,（如果采用加密方式，上面一项要设置为true；加密工具，可在官方下载，
如果使用明文这样server=127.0.0.1;database=.....,上面则设置为false。 -->
<add key="ConnectionString" value="server=127.0.0.1;database=acrossdb1;uid=sa;pwd=123456"/>
<!--其它模块连接字符串，可以不断增加以便同一个项目支持连接多个数据库。如果没有，可以删除该行-->
<add key="ConnectionString2" value="server=127.0.0.1;database=acrossdb2;uid=sa;pwd=123456"/>
<!--虚拟目录名称(如果是站点，则为空) -->
<add key="VirtualPath" value=""/>
<!--登录页地址 -->
<add key="LoginPage" value="admin/Login.aspx"/>
<!--默认菜单是否是展开状态-->
<add key="MenuExpanded" value="false"/>
<!--实体对象内容缓村的时间（分钟）-->
<add key="ModelCache" value="30"/>
</appSettings>