private void DeleteItem(Tripsss trip, Item item)
 {
     trip.DeleteItem(item);
     updateTrip(trip);
 }
 private void EditItem(Tripsss trip, Item oldItem, Item newItem)
 {
     Debug.WriteLine(oldItem.Name);
     trip.DeleteItem(oldItem);
     
     trip.AddItem(newItem);
     updateTrip(trip);
 }