1.将MySql.Data.dll引用到你的项目中

   右键工程去完成。

2.using MySql.Data;

  using MySql.Data.MySqlClient;

 

3.

        

1             MySqlConnection objConn = new MySqlConnection(); 2             objConn.ConnectionString = "Database='main_db';Data Source='localhost';User Id='root';Password='root';charset='utf8';pooling=true"; 3             objConn.Open(); 4             MySqlCommand objCmd = new MySqlCommand("select * from `main_db`.`t_user`", objConn); 5             MySqlDataReader  r = objCmd.ExecuteReader(); 6             while (r.Read()) 7             {               8          9                     textBox3.Text = textBox3.Text + r.GetString(0)+r.GetString(1);                     10 11             } 12            objConn.Close();

测试OK