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()+r.GetString();                     

             }
            objConn.Close();

测试OK