public void Save(int id, string price, string capacity, string numberOfRooms, feature selectedFeature, account cont) { HotelEntities context = new HotelEntities(); if (id == -1) { context.AddRoom(int.Parse(capacity), int.Parse(numberOfRooms), int.Parse(price), selectedFeature.id); context.SaveChanges(); } else { context.ModifyRoom(id, int.Parse(numberOfRooms), int.Parse(price), selectedFeature.id, int.Parse(capacity)); context.SaveChanges(); } MainViewModel.Instance.ActiveScreen = new RoomsViewModel(cont); }