public MainWindow()
 {
     InitializeComponent();
     DataReceivedDelegate = FillDataReceivedTextBox;
     ConnectionWindow     = new Connection_Window();
     ConnectionWindow.Show();
 }
 private void ConnectMenuItem_Click(object sender, RoutedEventArgs e)
 {
     ConnectionWindow = new Connection_Window();
     ConnectionWindow.Show();
     ConnectionWindow.PortOpen += HandlePortOpen;
 }