private void detach_ChiTietGiaoHangs(ChiTietGiaoHang entity)
{
this.SendPropertyChanging();
entity.PhieuGiaoHang = null;
}
partial void DeleteChiTietGiaoHang(ChiTietGiaoHang instance);
partial void InsertChiTietGiaoHang(ChiTietGiaoHang instance);
partial void UpdateChiTietGiaoHang(ChiTietGiaoHang instance);
private void attach_ChiTietGiaoHangs(ChiTietGiaoHang entity)
{
this.SendPropertyChanging();
entity.HangHoa = this;
}