private void AddPhotographer_Click(object sender, RoutedEventArgs e)
{
EditPhotographer window = new EditPhotographer(((TaskbarVM)DataContext).EditPhotographerVM, null);
window.ShowDialog();
}
private void AddBtn_Click(object sender, RoutedEventArgs e)
{
EditPhotographer window = new EditPhotographer(((ListPhotographerVM)DataContext).EditPhotographerVM, (PhotographerModel)PhotographerList.SelectedItem);
window.ShowDialog();
}