partial void Deleteres_ab_titer(res_ab_titer instance);
 partial void Insertres_ab_titer(res_ab_titer instance);
 partial void Updateres_ab_titer(res_ab_titer instance);
		private void detach_res_ab_titer(res_ab_titer entity)
		{
			this.SendPropertyChanging();
			entity.check_bill = null;
		}