private void serialPortTsMenuItem_Click(object sender, EventArgs e) { FrmSelectSerialPort SelectSerialPort = new FrmSelectSerialPort(); if (DialogResult.OK == SelectSerialPort.ShowDialog()) { if (SelectSerialPort.COMx != null && SelectSerialPort.COMx != String.Empty) { Properties.Settings.Default.COMx = SelectSerialPort.COMx; Properties.Settings.Default.Save(); } } }