public void LoadItems()
 {
     Venues.Clear();
     foreach (Venue v in administrationService.GetVenues())
     {
         Venues.Add(new VenueVM(v, administrationService));
     }
     CurrentVenue = Venues.First();
     RaisePropertyChangedEvent(nameof(Venues));
     RaisePropertyChangedEvent(nameof(CurrentVenue));
 }