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(); }}
