C#连接mysql资料整理

http://yuexiaodong2011.blog.163.com/blog/static/17133630920120585028530/

2012-01-05 20:50:28|  分类： C#学习 |  标签：c#  mysql  |字号 订阅

第三方组件：Mysql.Data.dll
说明：去官方网站下载Mysql.Data.dll，然后在项目中添加该组件的引用，在代码页里输入using Mysql.Data.MysqlClient，我们就可以顺利的使用该类库的函数建立连接了。

以下是几个常用函数：

#region  建立MySql数据库连接
    /// <summary>
    /// 建立数据库连接.
    /// </summary>
    /// <returns>返回MySqlConnection对象</returns>
    public MySqlConnection getmysqlcon()
    {
        string M_str_sqlcon = "server=localhost;user id=root;password=root;database=abc"; //根据自己的设置
        MySqlConnection myCon = new MySqlConnection(M_str_sqlcon);
        return myCon;
    }
    #endregion

    #region  执行MySqlCommand命令
    /// <summary>
    /// 执行MySqlCommand
    /// </summary>
    /// <param name="M_str_sqlstr">SQL语句</param>
    public void getmysqlcom(string M_str_sqlstr)
    {
        MySqlConnection mysqlcon = this.getmysqlcon();
        mysqlcon.Open();
        MySqlCommand mysqlcom = new MySqlCommand(M_str_sqlstr, mysqlcon);
        mysqlcom.ExecuteNonQuery();
        mysqlcom.Dispose();
        mysqlcon.Close();
        mysqlcon.Dispose();
    }
    #endregion

#region  创建MySqlDataReader对象
    /// <summary>
    /// 创建一个MySqlDataReader对象
    /// </summary>
    /// <param name="M_str_sqlstr">SQL语句</param>
    /// <returns>返回MySqlDataReader对象</returns>
    public MySqlDataReader getmysqlread(string M_str_sqlstr)
    {
        MySqlConnection mysqlcon = this.getmysqlcon();
        MySqlCommand mysqlcom = new MySqlCommand(M_str_sqlstr, mysqlcon);
        mysqlcon.Open();
        MySqlDataReader mysqlread = mysqlcom.ExecuteReader(CommandBehavior.CloseConnection);
        return mysqlread;
    }
    #endregion

 

 

 

另一篇：

 

测试环境：Windows XP + MySql 5.0.24 + Visual C# 2008 Exdivss Edition
By lucas 2008.12.29
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();
}
/
/
           MyConnection.Close();
        }
    }
}