// Avoid extra tests by enabling only the buttons that can be used
private void SetButtonEnables()
{
int addr;
int len;
bool isConnected = MB == null ? false : MB.IsConnected;
bool comIsOn = isConnected && MB.ComIsOn;
bool appIsOpen = twinApp != null;
cmdConnect.Enabled = !isConnected;
cmdDisconnect.Enabled = isConnected;
cmdComOff.Enabled = comIsOn;
cmdComOn.Enabled = isConnected && !comIsOn;
cmdStartUp.Enabled = comIsOn;
cmdShutDown.Enabled = comIsOn;
cmdReady.Enabled = comIsOn;
cmdStandby.Enabled = comIsOn;
cmdGetStatus.Enabled = isConnected;
cmdReset.Enabled = comIsOn;
cmdReadData.Enabled = comIsOn &&
int.TryParse(txtDataAddress.Text, NumberStyles.HexNumber, null, out addr) &&
int.TryParse(txtDataLength.Text, out len);
cmdWriteData.Enabled = comIsOn &&
int.TryParse(txtDataAddress.Text, NumberStyles.HexNumber, null, out addr) &&
int.TryParse(txtDataLength.Text, out len) &&
txtData.Text.Length > 0;
cmdRetrieve.Enabled = comIsOn;
cmdSaveAs.Enabled = txtIndentedView.Text.Length > 0;
cmdOpen.Enabled = true; // For now
cmdSend.Enabled = comIsOn && txtIndentedView.Text.Length > 0;
cmdExperiment.Enabled = comIsOn;
chkTwinNozzle.Enabled = !isConnected;
cmdErrorRefresh.Enabled = comIsOn;
cmdErrorClear.Enabled = comIsOn;
cmdGroupRefresh.Enabled = comIsOn;
cmdMessageAdd.Enabled = comIsOn && cbMessageNumber.SelectedIndex >= 0 && txtMessageName.Text.Length > 0;
cmdMessageDelete.Enabled = comIsOn && dgMessages.Rows.Count > 0 && dgMessages.SelectedRows.Count == 1;
cmdMessageRefresh.Enabled = comIsOn;
cmdMessageLoad.Enabled = comIsOn && dgMessages.Rows.Count > 0 && dgMessages.SelectedRows.Count == 1;
//cmdMessageAdd.Enabled = false;
//cmdMessageDelete.Enabled = false;
up.SetButtonEnables(comIsOn);
}
