partial void DeleteOrder_Details(Order_Details instance);
 partial void UpdateOrder_Details(Order_Details instance);
		private void detach_Order_Details(Order_Details entity)
		{
			this.SendPropertyChanging();
			entity.Products = null;
		}
 partial void InsertOrder_Details(Order_Details instance);
		private void attach_Order_Details(Order_Details entity)
		{
			this.SendPropertyChanging();
			entity.Orders = this;
		}