private void btnConnectCode_Click(object sender, EventArgs e) { try { if (!CodePort.IsOpen) { btnConnectCode.Text = "Disconnect"; CodePort.PortName = cmbCodeCom.Text; CodePort.BaudRate = int.Parse(cmbBaudrateCode.Text); CodePort.Open(); } else { btnConnectCode.Text = "Connect"; CodePort.Close(); } } catch (Exception ex) { MessageBox.Show(ex.Message); btnConnectCode.Text = "Connect"; CodePort.Close(); } }