c#连接MySql数据库的两种方法

1、用MySQLDriverCS连接MySQL数据库 先下载和安装MySQLDriverCS，地址： http://sourceforge.net/projects/mysqldrivercs/ 在安装文件夹下面找到MySQLDriver.dll，然后将MySQLDriver.dll添加引用到项目中 注：我下载的是版本是 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、通过ODBC访问mysql数据库： 参考：http://www.microsoft.com/china/community/Column/63.mspx 1.      安装Microsoft ODBC.net：我安装的是mysql-connector-odbc-3.51.22-win32.msi 2.      安装MDAC 2.7或者更高版本：我安装的是mdac_typ.exe 2.7简体中文版 3.      安装MySQL的ODBC驱动程序：我安装的是 odbc_net.msi 4.      管理工具 -> 数据源ODBC –>配置DSN… 5.      解决方案管理中添加引用 Microsoft.Data.Odbc.dll(1.0.3300) 6.      代码中增加引用 using Microsoft.Data.Odbc;  
 using System; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Linq;   //vs2005好像没有这个命名空间，在c#2008下测试自动生成的 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);             //处理异常：插入重复记录有异常 try{    cmd.ExecuteNonQuery(); } catch(Exception ex){                  Console.WriteLine("record duplicate."); }finally{                  cmd.Dispose(); } //***********************用read方法读数据到textbox**********************             string tmp1 = null;             string tmp2 = null;             string tmp3 = null;             query = "select * from test ";             OdbcCommand cmd2 = new OdbcCommand(query, MyConnection);             OdbcDataReader reader = cmd2.ExecuteReader();             while (reader.Read())             {                 tmp1 = reader[0].ToString();                 tmp2 = reader[1].ToString();                 tmp3 = reader[2].ToString();             }             this.textBox1.Text = tmp1 + " " + tmp2 + " " + tmp3;             */ //************************用datagridview控件显示数据表************************** string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +                                  "SERVER=localhost;" +                                  "DATABASE=inv;" +                                  "UID=root;" +                                  "PASSWORD=831025;" +                                  "OPTION=3";           OdbcConnection MyConnection = new OdbcConnection(MyConString); OdbcDataAdapter oda = new OdbcDataAdapter("select * from customer ", MyConnection); DataSet ds = new DataSet();           oda.Fill(ds, "employee");           this.dataGridView1.DataSource = ds.Tables["employee"]; */            MyConnection.Close();         }     } }