string name = textBox1.Text;
            string pass = textBox2.Text;
            string update = "Update users set username='"+name+"',upassword='"+pass+"'";
            MySqlCommand mycom = new MySqlCommand(update, connect);
            MySqlDataAdapter adap = new MySqlDataAdapter(update, connect);
            connect.Open();
            MySqlDataReader mydr;
            mydr = mycom.ExecuteReader();
            mydr.Read();
            connect.Close();