partial void Deleteres_serum_test(res_serum_test instance);
partial void Insertres_serum_test(res_serum_test instance);
partial void Updateres_serum_test(res_serum_test instance);
private void detach_res_serum_test(res_serum_test entity)
{
this.SendPropertyChanging();
entity.check_bill = null;
}