private void showWindow(Setup setup)
 {
     using (var cvm = new CameraViewModel(setup))
     {
         _view = new CameraView(cvm);
         _view.ShowDialog();
     }
 }
 public void Close()
 {
     _view?.Dispatcher.Invoke(() =>
     {
         _view?.ViewModel.Close();
         _view?.Close();
         _view = null;
     });
 }