private void Edit_Click(object Sender, RoutedEventArgs E)
{
if (lb.SelectedItem != null)
{
EditTravel Edit = new EditTravel(lb.SelectedItem as DB.Reise);
Edit.Show();
}
}
private void New_Click(object Sender, RoutedEventArgs E)
{
EditTravel Edit = new EditTravel();
Edit.Show();
}