连接MYSQL数据库的方法及示例

方法一：

使用MYSQL推出的MySQL Connector/Net is an ADO.NET driver for MySQL

该组件为MYSQL为ADO.NET访问MYSQL数据库设计的.NET访问组件。

安装完成该组件后，引用命名空间MySql.Data.MySqlClient;

使用命令行编译时：csc /r:MySql.Data.dll test.cs

方法二：

通过ODBC访问MYSQL数据库

访问前要先下载两个组件：odbc.net和MYSQL的ODBC驱动(MySQL Connector/ODBC (MyODBC) driver)目前为3.51版

安装完成后，即可通过ODBC访问MYSQL数据库

方法三：

使用CoreLab推出的MYSQL访问组件，面向.NET

安装完成后，引用命名空间：CoreLab.MySql;

使用命令编译时：csc /r:CoreLab.MySql.dll test.cs

以下为访问MYSQL数据库实例

编译指令：csc /r:CoreLab.MySql.dll /r:MySql.Data.dll test.cs

using System;

using System.Net;

using System.Text;

using CoreLab.MySql;

using System.Data.Odbc;

using MySql.Data.MySqlClient;

class ConnectMySql

{

public void Connect_CoreLab()

{

string constr = "User Id=root;Host=localhost;Database=qing;password=qing";

MySqlConnection mycn = new MySqlConnection(constr);

mycn.Open();

MySqlCommand mycm = new MySqlCommand("select * from shop",mycn);

MySqlDataReader msdr = mycm.ExecuteReader();

while(msdr.Read())

{

if (msdr.HasRows)

{

Console.WriteLine(msdr.GetString(0));

}

}

msdr.Close();

mycn.Close();

}

public void Connect_Odbc()

{

//string MyConString ="DSN=MySQL;UID=root;PWD=qing";

string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +

"SERVER=localhost;" +

"DATABASE=test;" +

"UID=root;" +

"PASSWORD=qing;" +

"OPTION=3";

OdbcConnection MyConn = new OdbcConnection(MyConString);

MyConn.Open();

OdbcCommand mycm = new OdbcCommand("select * from hello",MyConn);

OdbcDataReader msdr = mycm.ExecuteReader();

while(msdr.Read())

{

if (msdr.HasRows)

{

Console.WriteLine(msdr.GetString(0));

}

}

msdr.Close();

MyConn.Close();

}

public void Connect_Net()

{

string myConnectionString = "Database=test;Data Source=localhost;User Id=root;Password=qing";

MySqlConnection mycn = new MySqlConnection(myConnectionString);

mycn.Open();

MySqlCommand mycm = new MySqlCommand("select * from hello",mycn);

MySqlDataReader msdr = mycm.ExecuteReader();

while(msdr.Read())

{

if (msdr.HasRows)

{

Console.WriteLine(msdr.GetString(0));

}

}

msdr.Close();

mycn.Close();

}

public static void Main()

{

ConnectMySql ms = new ConnectMySql();

ms.Connect_CoreLab();

ms.Connect_Odbc();

Connect_Net();

}

}