public void EditAuthor()
{
Author oldAuthor = new Author(_view.GetSelecetedAuthor().FirstName, _view.GetSelecetedAuthor().LastName);
additionalWindow window = new additionalWindow(_view.GetSelecetedAuthor());
bool? res = window.ShowDialog();
if (res != null && res == true)
{
_model.EditAuthor(oldAuthor, window.Author);
}
_view.MyListView.ItemsSource = _model.GetList();
}