第三方組件：Mysql.Data.dll
說明：去官方網(wǎng)站下載Mysql.Data.dll，然后在項目中添加該組件的引用,，在代碼頁里輸入using Mysql.Data.MysqlClient,，我們就可以順利的使用該類庫的函數(shù)建立連接了。

以下是幾個常用函數(shù)：

#region  建立MySql數(shù)據(jù)庫連接
    /// <summary>
    /// 建立數(shù)據(jù)庫連接.
    /// </summary>
    /// <returns>返回MySqlConnection對象</returns>
    public MySqlConnection getmysqlcon()
    {
        string M_str_sqlcon = "server=localhost;user id=root;password=root;database=abc"; //根據(jù)自己的設置
        MySqlConnection myCon = new MySqlConnection(M_str_sqlcon);
        return myCon;
    }
    #endregion

    #region  執(zhí)行MySqlCommand命令
    /// <summary>
    /// 執(zhí)行MySqlCommand
    /// </summary>
    /// <param name="M_str_sqlstr">SQL語句</param>
    public void getmysqlcom(string M_str_sqlstr)
    {
        MySqlConnection mysqlcon = this.getmysqlcon();
        mysqlcon.Open();
        MySqlCommand mysqlcom = new MySqlCommand(M_str_sqlstr, mysqlcon);
        mysqlcom.ExecuteNonQuery();
        mysqlcom.Dispose();
        mysqlcon.Close();
        mysqlcon.Dispose();
    }
    #endregion

#region  創(chuàng)建MySqlDataReader對象
    /// <summary>
    /// 創(chuàng)建一個MySqlDataReader對象
    /// </summary>
    /// <param name="M_str_sqlstr">SQL語句</param>
    /// <returns>返回MySqlDataReader對象</returns>
    public MySqlDataReader getmysqlread(string M_str_sqlstr)
    {
        MySqlConnection mysqlcon = this.getmysqlcon();
        MySqlCommand mysqlcom = new MySqlCommand(M_str_sqlstr, mysqlcon);
        mysqlcon.Open();
        MySqlDataReader mysqlread = mysqlcom.ExecuteReader(CommandBehavior.CloseConnection);
        return mysqlread;
    }
    #endregion

另一篇：

測試環(huán)境：Windows XP + MySql 5.0.24 + Visual C# 2008 Exdivss Edition
By lucas 2008.12.29
1,、用MySQLDriverCS連接MySQL數(shù)據(jù)庫
先下載和安裝MySQLDriverCS,，地址：
http:///projects/mysqldrivercs/
在安裝文件夾下面找到MySQLDriver.dll，然后將MySQLDriver.dll添加引用到項目中
注：我下載的是版本是 MySQLDriverCS-n-EasyQueryTools-4.0.1-DotNet2.0.exe

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.Odbc;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using MySQLDriverCS;
namespace mysql
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            MySQLConnection conn = null;
            conn = new MySQLConnection(new MySQLConnectionString("localhost", "inv", "root", "831025").AsString);
            conn.Open();
            MySQLCommand commn = new MySQLCommand("set names gb2312", conn);
            commn.ExecuteNonQuery();
            string sql = "select * from exchange ";
            MySQLDataAdapter mda = new MySQLDataAdapter(sql, conn);
            DataSet ds = new DataSet();
            mda.Fill(ds, "table1");
            this.dataGrid1.DataSource = ds.Tables["table1"];
            conn.Close();
        }
    }
}

2,、通過ODBC訪問mysql數(shù)據(jù)庫：
參考：http://www.microsoft.com/china/community/Column/63.mspx
1.      安裝Microsoft ODBC.net：我安裝的是mysql-connector-odbc-3.51.22-win32.msi
2.      安裝MDAC 2.7或者更高版本：我安裝的是mdac_typ.exe 2.7簡體中文版
3.      安裝MySQL的ODBC驅(qū)動程序：我安裝的是 odbc_net.msi
4.      管理工具 -> 數(shù)據(jù)源ODBC –>配置DSN…
5.      解決方案管理中添加引用 Microsoft.Data.Odbc.dll(1.0.3300)
6.      代碼中增加引用 using Microsoft.Data.Odbc;
 

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;   //vs2005好像沒有這個命名空間,，在c#2008下測試自動生成的
using System.Text;
using System.Windows.Forms;
using Microsoft.Data.Odbc;
namespace mysql
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +
                                 "SERVER=localhost;" +
                                 "DATABASE=inv;" +
                                 "UID=root;" +
                                 "PASSWORD=831025;" +
                                 "OPTION=3";
            OdbcConnection MyConnection = new OdbcConnection(MyConString);
            MyConnection.Open();
            Console.WriteLine("\n success, connected successfully !\n");
            string query = "insert into test values( ''hello'', ''lucas'', ''liu'')";
            OdbcCommand cmd = new OdbcCommand(query, MyConnection);
            //處理異常：插入重復記錄有異常
try{
   cmd.ExecuteNonQuery();
}
catch(Exception ex){
                 Console.WriteLine("record duplicate.");
}finally{
                 cmd.Dispose();
}
/
/
           MyConnection.Close();
        }
    }
}