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();

}

}

}

文章转自： http://www.cnblogs.com/xiaohaikong/archive/2009/08/12/1544478.html