partial void DeleteDonDatHang(DonDatHang instance);
partial void UpdateDonDatHang(DonDatHang instance);
private void detach_DonDatHangs(DonDatHang entity)
{
this.SendPropertyChanging();
entity.KhachHang = null;
}
partial void InsertDonDatHang(DonDatHang instance);
private void attach_DonDatHangs(DonDatHang entity)
{
this.SendPropertyChanging();
entity.KhachHang = this;
}