private void detach_CHITIETDONTHANGs(CHITIETDONTHANG entity)
{
this.SendPropertyChanging();
entity.GIAY = null;
}
partial void DeleteCHITIETDONTHANG(CHITIETDONTHANG instance);
partial void InsertCHITIETDONTHANG(CHITIETDONTHANG instance);
partial void UpdateCHITIETDONTHANG(CHITIETDONTHANG instance);
private void attach_CHITIETDONTHANGs(CHITIETDONTHANG entity)
{
this.SendPropertyChanging();
entity.DONDATHANG = this;
}