partial void DeleteOrderDetail(OrderDetail instance);
 partial void UpdateOrderDetail(OrderDetail instance);
		private void detach_OrderDetails(OrderDetail entity)
		{
			this.SendPropertyChanging();
			entity.Product = null;
		}
 partial void InsertOrderDetail(OrderDetail instance);
		private void attach_OrderDetails(OrderDetail entity)
		{
			this.SendPropertyChanging();
			entity.Order = this;
		}