1、首先上MySQL网站下驱动：http://www.mysql.com/products/connector/
2、安装下载的安装包
3、我们在Visual Studio里创建一个Web Application，然后引入X:\XXXX\MySQL\MySQL Connector Net 6.3.6\Assemblies下的v2.0或v4.0里的DLL文件。
在MySQLHelper里面加入：
using MySql.Data.MySqlClient;
在Web.config里面加入MySQL数据库的连接字符串：
4、封装好的MySQLHelper类
using System;
using System.Collections.Generic;
using System.Data;
using System.Collections;
using MySql.Data.MySqlClient;
using System.Configuration;
namespace DBUtility
{
///
/// The SQLHelper class is intended to encapsulate high performance,
/// scalable best practices for common uses of SqlClient.
///
public abstract class MySQLHelper
{
// Read the connection strings from the configuration file
public static readonly string ConnectionStringLocalTransaction = ConfigurationManager.ConnectionStrings["OraConnString1"].ConnectionString;
public static readonly string ConnectionStringInventoryDistributedTransaction = ConfigurationManager.ConnectionStrings["OraConnString2"].ConnectionString;
public static readonly string ConnectionStringOrderDistributedTransaction = ConfigurationManager.ConnectionStrings["OraConnString3"].ConnectionString;
public static readonly string ConnectionStringProfile = ConfigurationManager.ConnectionStrings["OraProfileConnString"].ConnectionString;
public static readonly string ConnectionStringMembership = ConfigurationManager.ConnectionStrings["OraMembershipConnString"].ConnectionString;
//Create a hashtable for the parameter cached
private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());
///
/// Execute a database query which does not include a select
///
/// Connection string to database
/// Command type either stored procedure or SQL
/// Acutall SQL Command
/// Parameters to bind to the command
///
/// Execute an MySqlCommand (that returns no resultset) against an existing database transaction
/// using the provided parameters.
///
///
/// e.g.:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders", new MySqlParameter(":prodid", 24));
///
/// an existing database transaction
/// the CommandType (stored procedure, text, etc.)
/// the stored procedure name or PL/SQL command
/// an array of MySqlParamters used to execute the command
/// an int representing the number of rows affected by the command
public static int ExecuteNonQuery(MySqlTransaction trans, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
{
MySqlCommand cmd = new MySqlCommand();
PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
///
/// Execute an MySqlCommand (that returns no resultset) against an existing database connection
/// using the provided parameters.
///
///
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new MySqlParameter(":prodid", 24));
///
/// an existing database connection
/// the CommandType (stored procedure, text, etc.)
/// the stored procedure name or PL/SQL command
/// an array of MySqlParamters used to execute the command
/// an int representing the number of rows affected by the command
public static int ExecuteNonQuery(MySqlConnection connection, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
{
MySqlCommand cmd = new MySqlCommand();
PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return val;
}
///
/// Execute a select query that will return a result set
///
/// Connection string
//// the CommandType (stored procedure, text, etc.)
/// the stored procedure name or PL/SQL command
/// an array of MySqlParamters used to execute the command
///
/// Execute an MySqlCommand that returns the first column of the first record against the database specified in the connection string
/// using the provided parameters.
///
///
/// e.g.:
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new MySqlParameter(":prodid", 24));
///
/// a valid connection string for a SqlConnection
/// the CommandType (stored procedure, text, etc.)
/// the stored procedure name or PL/SQL command
/// an array of MySqlParamters used to execute the command
/// An object that should be converted to the expected type using Convert.To{Type}
public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
{
MySqlCommand cmd = new MySqlCommand();
using (MySqlConnection conn = new MySqlConnection(connectionString))
{
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
}
///
/// Execute a MySqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction
/// using the provided parameters.
///
/// A valid SqlTransaction
/// The CommandType (stored procedure, text, etc.)
/// The stored procedure name or PL/SQL command
/// An array of MySqlParamters used to execute the command
/// An object containing the value in the 1x1 resultset generated by the command
public static object ExecuteScalar(MySqlTransaction transaction, CommandType commandType, string commandText, params MySqlParameter[] 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
MySqlCommand cmd = new MySqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
// 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;
}
///
/// Execute an MySqlCommand that returns the first column of the first record against an existing database connection
/// using the provided parameters.
///
///
/// e.g.:
/// Object obj = ExecuteScalar(conn, CommandType.StoredProcedure, "PublishOrders", new MySqlParameter(":prodid", 24));
///
/// an existing database connection
/// the CommandType (stored procedure, text, etc.)
/// the stored procedure name or PL/SQL command
/// an array of MySqlParamters used to execute the command
/// An object that should be converted to the expected type using Convert.To{Type}
public static object ExecuteScalar(MySqlConnection connectionString, CommandType cmdType, string cmdText, params MySqlParameter[] commandParameters)
{
MySqlCommand cmd = new MySqlCommand();
PrepareCommand(cmd, connectionString, null, cmdType, cmdText, commandParameters);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
///
/// Add a set of parameters to the cached
///
/// Key value to look up the parameters
/// Actual parameters to cached
public static void CacheParameters(string cacheKey, params MySqlParameter[] commandParameters)
{
parmCache[cacheKey] = commandParameters;
}
///
/// Fetch parameters from the cache
///
/// Key to look up the parameters
///
/// Internal function to prepare a command for execution by the database
///
/// Existing command object
/// Database connection object
/// Optional transaction object
/// Command type, e.g. stored procedure
/// Command test
/// Parameters for the command
private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, CommandType cmdType, string cmdText, MySqlParameter[] commandParameters)
{
//Open the connection if required
if (conn.State != ConnectionState.Open)
conn.Open();
//Set up the command
cmd.Connection = conn;
cmd.CommandText = cmdText;
cmd.CommandType = cmdType;
//Bind it to the transaction if it exists
if (trans != null)
cmd.Transaction = trans;
// Bind the parameters passed in
if (commandParameters != null)
{
foreach (MySqlParameter parm in commandParameters)
cmd.Parameters.Add(parm);
}
}
///
/// Converter to use boolean data type with MySql
///
/// Value to convert
///
/// Converter to use boolean data type with MySql
///
/// Value to convert
///