//Konstruktor for New
public WindowReservation(WindowVerwaltung wf)
{
this.DataContext = this;
InitializeComponent();
Title.Content = "New Reservation";
CurrentReservation = new Reservation();
CurrentReservation.EndDate = DateTime.Today;
CurrentReservation.StartDate = DateTime.Today;
cbRoom.ItemsSource = new ObservableCollection <TblRoom>(new entitiesDataContext().TblRoom);
WF = wf;
}
//Konstruktor for Edit
public WindowReservation(WindowVerwaltung wf, Reservation res)
{
this.DataContext = this;
InitializeComponent();
Title.Content = "Edit Reservation";
CurrentReservation = res;
var ro = new entitiesDataContext().TblRoom.ToList();
cbRoom.ItemsSource = new ObservableCollection <TblRoom>(ro);
cbRoom.SelectedItem = ro.Where <TblRoom>(r => r.RoomId == res.RoomFK).FirstOrDefault();
WF = wf;
}