partial void Deletetlb_lop(tlb_lop instance);
partial void Updatetlb_lop(tlb_lop instance);
private void detach_tlb_lops(tlb_lop entity)
{
this.SendPropertyChanging();
entity.tlb_nganh = null;
}
partial void Inserttlb_lop(tlb_lop instance);
private void attach_tlb_lops(tlb_lop entity)
{
this.SendPropertyChanging();
entity.tlb_nganh = this;
}