private void MenuItemAddPhotographer_Click(object sender, RoutedEventArgs e)
{
var popup = new PhotographerAddWindow(_photographerViewModel, false);
popup.ShowDialog();
}
private void BtnAdd_Click(object sender, RoutedEventArgs e)
{
var PhotographerAddWindow = new PhotographerAddWindow(_controller);
PhotographerAddWindow.Show();
}