c#连接MySQL的教程及实例方法

先，我们到官方下载mysql-connector-net-5.5
Mysql的connector/net5.0下载地址:
http://dev.mysql.com/get/Downloads/Connector-Net/mysql-connector-net-5.0.6.zip/from/pick
安装好以后,
点属性,然后点查找目标,点向上一层目录,找到Binaries\.NET 2.0,然后将这个文件复制到你的工程目录下,一般这样的DLL文件会保存到bin目录下.

在 代码页里输入using Mysql.Data.MysqlClient;然后再在Page_Load函数里写MysqlConnection，在单词写到一半时提示就出来了，下 面的就不用写了吧?都已经出现”代码智能完成了”,随便写一段代码试试就可以了,和Sqlserver完全相似.
下面提供两段代码供参考,一个代码页

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using MySql.Data.MySqlClient;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string query = "select * from guestbook";
MySqlConnection myConnection = new MySqlConnection("server=localhost;user id=root;password=;database=guestbook");
MySqlCommand myCommand=new MySqlCommand(query,myConnection);
myConnection.Open();
myCommand.ExecuteNonQuery();
MySqlDataReader myDataReader = myCommand.ExecuteReader();
string bookres="";
while (myDataReader.Read()==true)
{
bookres+=myDataReader["id"];
bookres+=myDataReader["user"];
bookres += myDataReader["pass"];
}
myDataReader.Close();
myConnection.Close();
lb1.Text = bookres;
}
}


1、下载MySQL数据库，地址：http://www.mysql.com/，大小只有几十个兆而已，安装很方便，接提示即可。

2、 MySQL安装后默认是没有客户端工具的(像SQLServer的企业管理器，查询分析器等)，只是一个服务器存储数据，为了方便你要再下载一个客户端工 具，有很多，推荐使用SQL Manager for MySQL，简洁小巧，功能也强大。下载：http://www.sqlmanager.net/en/products/mysql/manager /download

3、ASP.NET连接MySQL需要一个组件(.net本身不提供访问MySQL的驱 动)MySQL.Data.Dll，此为官方提供(纯C#开发，开源噢)，有多个版本选择，采用的数据访问模式为ADO.NET，跟asp.net访问 sqlserver很像，非常简单。下载(里边有个demo)：http://dev.mysql.com/downloads/connector /net/5.1.html



c#连接MySql数据库的两种方法

测试环境：Windows XP + MySql 5.0.24 + Visual C# 2008 Exdivss Edition

By lucas 2008.12.29

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：

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();

        }

    }

}