c#连接MySql数据库的两种方法

一、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();

}

}

}

二、通过ODBC访问mysql数据库：

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();

}

}

}