public void RefreshDeliveryDishes()
 {
     CurrentDeliveryDisplayDishes.Clear();
     if (SelectedDelivery != null)
     {
         foreach (DishDTG dish in restaurantManager.GetDeliveryById(SelectedDelivery.Id).Dishes)
         {
             CurrentDeliveryDisplayDishes.Add(new DishModel(dish));
         }
     }
 }