partial void Deletetlb_hocbong(tlb_hocbong instance);
partial void Inserttlb_hocbong(tlb_hocbong instance);
partial void Updatetlb_hocbong(tlb_hocbong instance);
private void detach_tlb_hocbongs(tlb_hocbong entity) { this.SendPropertyChanging(); entity.tlb_sinhvien = null; }