private void detach_DONDATHANGs(DONDATHANG entity) { this.SendPropertyChanging(); entity.NGUOIDUNG = null; }
partial void UpdateDONDATHANG(DONDATHANG instance);
partial void DeleteDONDATHANG(DONDATHANG instance);
partial void InsertDONDATHANG(DONDATHANG instance);