private void deviceSignIn_Click(object sender, RoutedEventArgs e)
        {
            DeviceWindow deviceWindow = new DeviceWindow(this);

            deviceWindow.Closed += new EventHandler(DialogWindowClosed);
            deviceWindow.ShowDialog();
        }
 private void deviceSignIn_Click(object sender, RoutedEventArgs e)
 {
     DeviceWindow deviceWindow = new DeviceWindow(this);
     deviceWindow.Closed += new EventHandler(DialogWindowClosed);
     deviceWindow.ShowDialog();
 }