partial void DeleteEntityChiTietDuAn(EntityChiTietDuAn instance);
partial void InsertEntityChiTietDuAn(EntityChiTietDuAn instance);
partial void UpdateEntityChiTietDuAn(EntityChiTietDuAn instance);
private void detach_EntityChiTietDuAns(EntityChiTietDuAn entity) { this.SendPropertyChanging(); entity.EntityDuAn = null; }