using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.IO;
namespace JC.DAL
{
public class DbHelperSQL
{
public static SqlConnection Conn;
public static bool TestConnStatus;
private static string connectionString;
//public void OpenDB(OleDbConnection conn)
//{
// string ConnStr = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=CSSC_Line2;Data Source=zhyong";
// conn = new OleDbConnection(ConnStr);
// conn.Open();
//}
//public void CloseDB(OleDbConnection conn)
//{
// if (conn.State == ConnectionState.Open)
// {
// conn.Close();
// }
//}
static DbHelperSQL()
{
C3RegistryInfo c3RegistryInfo = new C3RegistryInfo();
connectionString = "server=" + c3RegistryInfo.ServerName + ";database=" + c3RegistryInfo.Database + ";uid=" + c3RegistryInfo.DatabaseUser + ";pwd=" + c3RegistryInfo.DatabasePassword;
}
/// <summary>
/// 打开数据库连接
/// </summary>
public static void OpenDB()
{
C3RegistryInfo c3RegistryInfo = new C3RegistryInfo();
string server = c3RegistryInfo.ServerName;
string database = c3RegistryInfo.Database;
string databaseuse = c3RegistryInfo.DatabaseUser;
string databaspassword = c3RegistryInfo.DatabasePassword;
if (string.IsNullOrEmpty(server))
{
server = c3RegistryInfo.ServerName;
database = c3RegistryInfo.Database;
databaseuse = c3RegistryInfo.DatabaseUser;
databaspassword = c3RegistryInfo.DatabasePassword;
if (!TestConnStatus) //进入系统参数设置，但未成功时
{
//TODO:
}
}
connectionString = "server=" + server + ";database=" + database + ";uid=" + databaseuse + ";pwd=" + databaspassword;
//string ConnStr = "server=zhyong;database=C3_JJJCO;uid=sa;pwd=";
//string ConnStr = "server=jjjco;database=C3_JJJCO;uid=sa;pwd=";
//string ConnStr = "server=10.136.3.3;database=C3_KEB;uid=sa;pwd=jjjcoic55580462";
Conn = new SqlConnection(connectionString);
Conn.Open();
}
/// <summary>
/// 关闭数据库连接
/// </summary>
public static void CloseDB()
{
if (Conn.State == ConnectionState.Open)
{
Conn.Close();
Conn.Dispose();
}
}
/// <summary>
/// 返回 DataSet 记录集
/// </summary>
/// <param name="strSQL"></param>
/// <returns></returns>
public static DataSet GetDataSet(string strSQL)
{
OpenDB();
SqlDataAdapter SQLda = new SqlDataAdapter(strSQL, Conn);
DataSet SQLds = new DataSet();
SQLda.Fill(SQLds);
CloseDB();
return SQLds;
}
/// <summary>
/// 返回DataTable记录集
/// </summary>
/// <param name="strSql"></param>
/// <returns></returns>
public static DataTable GetDataTable(string strSql)
{
OpenDB();
SqlDataAdapter sda = new SqlDataAdapter(strSql, Conn);
DataTable dt = new DataTable();
sda.Fill(dt);
CloseDB();
return dt;
}
/// <summary>
/// 返回 DataReader 对象
/// </summary>
/// <param name="strSQL"></param>
/// <returns></returns>
public static SqlDataReader GetDataReader(string strSQL)
{
OpenDB();
SqlCommand SQLcmd = Conn.CreateCommand();
SQLcmd.CommandText = strSQL;
SqlDataReader SQLreader = SQLcmd.ExecuteReader();
return SQLreader;
}
/// <summary>
///检查记录是否存在
/// </summary>
/// <param name="strSQL"></param>
/// <returns></returns>
public static Boolean CheckDataExists(string strSQL)
{
Boolean blnTF;
OpenDB();
SqlCommand SQLcmd = Conn.CreateCommand();
SQLcmd.CommandText = strSQL;
SqlDataReader SQLreader = SQLcmd.ExecuteReader();
SQLreader.Read();
if (SQLreader.HasRows)
{ blnTF = true; }
else
{ blnTF = false; }
SQLreader.Close();
CloseDB();
return blnTF;
}
/// <summary>
/// 检查表字段值是否存在
/// </summary>
/// <param name="TableName">表名</param>
/// <param name="FieldName">字段名</param>
/// <param name="FieldValue">字值值</param>
/// <returns></returns>
public static Boolean ColumnValueExists(string TableName, string ColumnName, string ColumnValue)
{
Boolean blnTF;
string strSQL;
strSQL = "select 1 from " + TableName + " where " + ColumnName + "='" + ColumnValue + "'";
OpenDB();
SqlCommand SQLcmd = Conn.CreateCommand();
SQLcmd.CommandText = strSQL;
SqlDataReader SQLreader = SQLcmd.ExecuteReader();
SQLreader.Read();
if (SQLreader.HasRows)
{ blnTF = true; }
else
{ blnTF = false; }
SQLreader.Close();
CloseDB();
return blnTF;
}
/// <summary>
/// 执行SQL命令
/// </summary>
/// <param name="strSQL"></param>
public static void ExecuteSQLcommand(string strSQL)
{
OpenDB();
SqlCommand SQLcmd = Conn.CreateCommand();
//SQLcmd.CommandType = CommandType.Text;
SQLcmd.CommandText = strSQL;
SQLcmd.ExecuteNonQuery();
CloseDB();
}
/// <summary>
/// 取记录ID值
/// </summary>
/// <param name="strSQL"></param>
/// <returns></returns>
public static int GetRecID(string strSQL)
{
int RecID = -1;
SqlDataReader SQLreader = GetDataReader(strSQL);
if (SQLreader.Read())
{
RecID = int.Parse(SQLreader[0].ToString());
}
SQLreader.Close();
SQLreader.Dispose();
CloseDB();
return RecID;
}
/// <summary>
/// 获取单个字段值
/// </summary>
/// <param name="strSQL"></param>
/// <returns></returns>
public static string GetItemValue(string strSQL)
{
//取字段值
string GetItemValue = "";
SqlDataReader SQLreader = GetDataReader(strSQL);
if (SQLreader.Read())
{
GetItemValue = SQLreader[0].ToString();
}
SQLreader.Close();
CloseDB();
return GetItemValue;
}
/// <summary>
/// 执行存储过程
/// </summary>
/// <param name="cmdText">存储过程名称</param>
/// <param name="Prams">存储过程参数数组</param>
public static void ExecuteStoredProc(string cmdText, SqlParameter[] Prams)
{
OpenDB();
SqlCommand SQLcmd = new SqlCommand();
SQLcmd.Connection = Conn;
SQLcmd.CommandType = CommandType.StoredProcedure;
SQLcmd.CommandText = cmdText;
foreach (SqlParameter P in Prams)
{
SQLcmd.Parameters.Add(P);
}
SQLcmd.ExecuteNonQuery();
CloseDB();
}
//public Boolean InsertData(string[] strFields,string[] strValue)
//{
//}
#region 公用方法
/// <summary>
/// 判断是否存在某表的某个字段
/// </summary>
/// <param name="tableName">表名称</param>
/// <param name="columnName">列名称</param>
/// <returns>是否存在</returns>
public static bool ColumnExists(string tableName, string columnName)
{
string sql = "select count(1) from syscolumns where [id]=object_id('" + tableName + "') and [name]='" + columnName + "'";
object res = GetSingle(sql);
if (res == null)
{
return false;
}
return Convert.ToInt32(res) > 0;
}
public static int GetMaxID(string FieldName, string TableName)
{
string strsql = "select max(" + FieldName + ")+1 from " + TableName;
object obj = GetSingle(strsql);
if (obj == null)
{
return 1;
}
else
{
return int.Parse(obj.ToString());
}
}
public static bool Exists(string strSql)
{
object obj = GetSingle(strSql);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString()); //也可能=0
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
/// <summary>
/// 表是否存在
/// </summary>
/// <param name="TableName"></param>
/// <returns></returns>
public static bool TabExists(string TableName)
{
string strsql = "select count(*) from sysobjects where id = object_id(N'[" + TableName + "]') and OBJECTPROPERTY(id, N'IsUserTable') = 1";
//string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
object obj = GetSingle(strsql);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
public static bool Exists(string strSql, params SqlParameter[] cmdParms)
{
object obj = GetSingle(strSql, cmdParms);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
#endregion
#region 执行简单SQL语句
/// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
/// <summary>
/// 获取单行单列的值
/// </summary>
/// <param name="SQLString"></param>
/// <returns></returns>
public static object ExecuteScalar(string SQLString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
return cmd.ExecuteScalar();
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
public static int ExecuteSqlByTime(string SQLString, int Times)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
///// <summary>
///// 执行Sql和Oracle滴混合事务
///// </summary>
///// <param name="list">SQL命令行列表</param>
///// <param name="oracleCmdSqlList">Oracle命令行列表</param>
///// <returns>执行结果 0-由于SQL造成事务失败 -1 由于Oracle造成事务失败 1-整体事务执行成功</returns>
//public static int ExecuteSqlTran(List<CommandInfo> list, List<CommandInfo> oracleCmdSqlList)
//{
// using (SqlConnection conn = new SqlConnection(connectionString))
// {
// conn.Open();
// SqlCommand cmd = new SqlCommand();
// cmd.Connection = conn;
// SqlTransaction tx = conn.BeginTransaction();
// cmd.Transaction = tx;
// try
// {
// foreach (CommandInfo myDE in list)
// {
// string cmdText = myDE.CommandText;
// SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
// PrepareCommand(cmd, conn, tx, cmdText, cmdParms);
// if (myDE.EffentNextType == EffentNextType.SolicitationEvent)
// {
// if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
// {
// tx.Rollback();
// throw new Exception("违背要求" + myDE.CommandText + "必须符合select count(..的格式");
// //return 0;
// }
// object obj = cmd.ExecuteScalar();
// bool isHave = false;
// if (obj == null && obj == DBNull.Value)
// {
// isHave = false;
// }
// isHave = Convert.ToInt32(obj) > 0;
// if (isHave)
// {
// //引发事件
// myDE.OnSolicitationEvent();
// }
// }
// if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
// {
// if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
// {
// tx.Rollback();
// throw new Exception("SQL:违背要求" + myDE.CommandText + "必须符合select count(..的格式");
// //return 0;
// }
// object obj = cmd.ExecuteScalar();
// bool isHave = false;
// if (obj == null && obj == DBNull.Value)
// {
// isHave = false;
// }
// isHave = Convert.ToInt32(obj) > 0;
// if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
// {
// tx.Rollback();
// throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须大于0");
// //return 0;
// }
// if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
// {
// tx.Rollback();
// throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须等于0");
// //return 0;
// }
// continue;
// }
// int val = cmd.ExecuteNonQuery();
// if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
// {
// tx.Rollback();
// throw new Exception("SQL:违背要求" + myDE.CommandText + "必须有影响行");
// //return 0;
// }
// cmd.Parameters.Clear();
// }
// string oraConnectionString = PubConstant.GetConnectionString("ConnectionStringPPC");
// bool res = OracleHelper.ExecuteSqlTran(oraConnectionString, oracleCmdSqlList);
// if (!res)
// {
// tx.Rollback();
// throw new Exception("Oracle执行失败");
// // return -1;
// }
// tx.Commit();
// return 1;
// }
// catch (System.Data.SqlClient.SqlException e)
// {
// tx.Rollback();
// throw e;
// }
// catch (Exception e)
// {
// tx.Rollback();
// throw e;
// }
// }
//}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">多条SQL语句</param>
public static int ExecuteSqlTran(List<String> SQLStringList)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
SqlTransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
int count = 0;
for (int n = 0; n < SQLStringList.Count; n++)
{
string strsql = SQLStringList[n];
if (strsql.Trim().Length > 1)
{
cmd.CommandText = strsql;
count += cmd.ExecuteNonQuery();
}
}
tx.Commit();
return count;
}
catch
{
tx.Rollback();
return 0;
}
}
}
/// <summary>
/// 执行带一个存储过程参数的的SQL语句。
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString, string content)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(SQLString, connection);
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
myParameter.Value = content;
cmd.Parameters.Add(myParameter);
try
{
connection.Open();
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}
/// <summary>
/// 执行带一个存储过程参数的的SQL语句。
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
/// <returns>影响的记录数</returns>
public static object ExecuteSqlGet(string SQLString, string content)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(SQLString, connection);
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
myParameter.Value = content;
cmd.Parameters.Add(myParameter);
try
{
connection.Open();
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}
/// <summary>
/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
/// </summary>
/// <param name="strSQL">SQL语句</param>
/// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(strSQL, connection);
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Image);
myParameter.Value = fs;
cmd.Parameters.Add(myParameter);
try
{
connection.Open();
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}
/// <summary>
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// </summary>
/// <param name="SQLString">计算查询结果语句</param>
/// <returns>查询结果（object）</returns>
public static object GetSingle(string SQLString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
public static object GetSingle(string SQLString, int Times)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
/// <summary>
/// 执行查询语句，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="strSQL">查询语句</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string strSQL)
{
SqlConnection connection = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(strSQL, connection);
try
{
connection.Open();
SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return myReader;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
public static DataSet Query(string SQLString, int Times)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.SelectCommand.CommandTimeout = Times;
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
#endregion
#region 执行带参数的SQL语句
/// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
int rows = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 查询插入的数据名是否存在
/// </summary>
/// <param name="str"></param>
/// <param name="vlaues"></param>
/// <returns></returns>
public static bool ExecuteSQLSalar(string str, params SqlParameter[] vlaues)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, str, vlaues);
int rows = (int)cmd.ExecuteScalar();
cmd.Parameters.Clear();
if (rows >= 0)
return false;
else
return true;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static void ExecuteSqlTran(Hashtable SQLStringList)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
try
{
//循环
foreach (DictionaryEntry myDE in SQLStringList)
{
string cmdText = myDE.Key.ToString();
SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
}
trans.Commit();
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
try
{
int count = 0;
//循环
foreach (CommandInfo myDE in cmdList)
{
string cmdText = myDE.CommandText;
SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
{
if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
{
trans.Rollback();
return 0;
}
object obj = cmd.ExecuteScalar();
bool isHave = false;
if (obj == null && obj == DBNull.Value)
{
isHave = false;
}
isHave = Convert.ToInt32(obj) > 0;
if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
{
trans.Rollback();
return 0;
}
if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
{
trans.Rollback();
return 0;
}
continue;
}
int val = cmd.ExecuteNonQuery();
count += val;
if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
{
trans.Rollback();
return 0;
}
cmd.Parameters.Clear();
}
trans.Commit();
return count;
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static void ExecuteSqlTranWithIndentity(System.Collections.Generic.List<CommandInfo> SQLStringList)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
try
{
int indentity = 0;
//循环
foreach (CommandInfo myDE in SQLStringList)
{
string cmdText = myDE.CommandText;
SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
foreach (SqlParameter q in cmdParms)
{
if (q.Direction == ParameterDirection.InputOutput)
{
q.Value = indentity;
}
}
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
int val = cmd.ExecuteNonQuery();
foreach (SqlParameter q in cmdParms)
{
if (q.Direction == ParameterDirection.Output)
{
indentity = Convert.ToInt32(q.Value);
}
}
cmd.Parameters.Clear();
}
trans.Commit();
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
try
{
int indentity = 0;
//循环
foreach (DictionaryEntry myDE in SQLStringList)
{
string cmdText = myDE.Key.ToString();
SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
foreach (SqlParameter q in cmdParms)
{
if (q.Direction == ParameterDirection.InputOutput)
{
q.Value = indentity;
}
}
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
int val = cmd.ExecuteNonQuery();
foreach (SqlParameter q in cmdParms)
{
if (q.Direction == ParameterDirection.Output)
{
indentity = Convert.ToInt32(q.Value);
}
}
cmd.Parameters.Clear();
}
trans.Commit();
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// </summary>
/// <param name="SQLString">计算查询结果语句</param>
/// <returns>查询结果（object）</returns>
public static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
object obj = cmd.ExecuteScalar();
cmd.Parameters.Clear();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 执行查询语句，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="strSQL">查询语句</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
{
SqlConnection connection = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand();
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return myReader;
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
// finally
// {
// cmd.Dispose();
// connection.Close();
// }
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
try
{
da.Fill(ds, "ds");
cmd.Parameters.Clear();
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
}
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
{
if (conn.State != ConnectionState.Open)
conn.Open();
cmd.Connection = conn;
cmd.CommandText = cmdText;
if (trans != null)
cmd.Transaction = trans;
cmd.CommandType = CommandType.Text;//cmdType;
if (cmdParms != null)
{
foreach (SqlParameter parameter in cmdParms)
{
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
(parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
cmd.Parameters.Add(parameter);
}
}
}
#endregion
#region 存储过程操作
/// <summary>
/// 执行存储过程，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
{
SqlConnection connection = new SqlConnection(connectionString);
SqlDataReader returnReader;
connection.Open();
SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
command.CommandType = CommandType.StoredProcedure;
returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
return returnReader;
}
/// <summary>
/// 执行存储过程
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="tableName">DataSet结果中的表名</param>
/// <returns>DataSet</returns>
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataSet dataSet = new DataSet();
connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
sqlDA.Fill(dataSet, tableName);
connection.Close();
return dataSet;
}
}
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataSet dataSet = new DataSet();
connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
sqlDA.SelectCommand.CommandTimeout = Times;
sqlDA.Fill(dataSet, tableName);
connection.Close();
return dataSet;
}
}
/// <summary>
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlCommand</returns>
private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
{
SqlCommand command = new SqlCommand(storedProcName, connection);
command.CommandType = CommandType.StoredProcedure;
foreach (SqlParameter parameter in parameters)
{
if (parameter != null)
{
// 检查未分配值的输出参数,将其分配以DBNull.Value.
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
(parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
command.Parameters.Add(parameter);
}
}
return command;
}
/// <summary>
/// 执行存储过程，返回影响的行数
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="rowsAffected">影响的行数</param>
/// <returns></returns>
public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
int result;
connection.Open();
SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
rowsAffected = command.ExecuteNonQuery();
result = (int)command.Parameters["ReturnValue"].Value;
//Connection.Close();
return result;
}
}
/// <summary>
/// 创建 SqlCommand 对象实例(用来返回一个整数值)
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlCommand 对象实例</returns>
private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
{
SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
command.Parameters.Add(new SqlParameter("ReturnValue",
SqlDbType.Int, 4, ParameterDirection.ReturnValue,
false, 0, 0, string.Empty, DataRowVersion.Default, null));
return command;
}
#endregion
}
}
