private void lstName_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
string name = ((Buchung)lstName.SelectedItem).Name;
ListZimmer lz = new ListZimmer(h.ausgebenNamen(name));
lz.ShowDialog();
}
private void lstZimmer_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
int nr = ((int)lstZimmer.SelectedItem);
ListZimmer lz = new ListZimmer(h.ausgebenZimmerBuchung(nr));
lz.ShowDialog();
}
