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;
}