C#连接MySql数据库的两种方法

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/" target=_blank> 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(" success, connected successfully ! ");


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();


}


}


}