C# MySql 连接

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.

        

            MySqlConnection objConn = new MySqlConnection();
            objConn.ConnectionString = "Database='main_db';Data Source='localhost';User Id='root';Password='root';charset='utf8';pooling=true";
            objConn.Open();
            MySqlCommand objCmd = new MySqlCommand("select * from `main_db`.`t_user`", objConn);
            MySqlDataReader  r = objCmd.ExecuteReader();
            while (r.Read())
            {              
        
                    textBox3.Text = textBox3.Text + r.GetString(0)+r.GetString(1);                     

            } 
           objConn.Close();

测试OK