private void button1_Click(object sender, EventArgs e) { RFID rfid = new RFID(); rfid.Portcom = comboBox1.Text; rfid.Buadrate = int.Parse(comboBox2.Text); System.IO.Ports.SerialPort serial = new System.IO.Ports.SerialPort(rfid.Portcom, rfid.Buadrate, System.IO.Ports.Parity.None, 8, System.IO.Ports.StopBits.One); if (rfid.Buadrate == 14400) { serial.Open(); MessageBox.Show("Connection Port: " + rfid.Portcom + " Success"); button1.Visible = false; } else { MessageBox.Show("Connection Failed"); } //MessageBox.Show("Success Connect Port : "+rfid.Portcom +" Buadrate : "+rfid.Buadrate); //Connect Button }