partial void Deletehoadon(hoadon instance);
partial void Updatehoadon(hoadon instance);
private void detach_hoadons(hoadon entity) { this.SendPropertyChanging(); entity.KhachHang = null; }
partial void Inserthoadon(hoadon instance);
private void attach_hoadons(hoadon entity) { this.SendPropertyChanging(); entity.KhachHang = this; }