private void Archive_Click(object sender, RoutedEventArgs e)
 {
     rdcw = new RentedCarWindow(s, 3);
     rdcw.ShowDialog();
 }
 private void Report_Click(object sender, RoutedEventArgs e)
 {
     rdcw = new RentedCarWindow(s, 4);
     rdcw.ShowDialog();
 }
 private void FinishedRented_Click(object sender, RoutedEventArgs e)
 {
     rdcw = new RentedCarWindow(s, 2);
     rdcw.ShowDialog();
 }