private void detach_cart(cart entity)
		{
			this.SendPropertyChanging();
			entity.products = null;
		}
		private void attach_cart(cart entity)
		{
			this.SendPropertyChanging();
			entity.products = this;
		}
 partial void Updatecart(cart instance);
 partial void Deletecart(cart instance);
 partial void Insertcart(cart instance);