private void detach_TaiSans(TaiSan entity)
 {
     this.SendPropertyChanging();
     entity.LoaiTaiSan = null;
 }
 private void attach_TaiSans(TaiSan entity)
 {
     this.SendPropertyChanging();
     entity.LoaiTaiSan = this;
 }
 partial void UpdateTaiSan(TaiSan instance);
 partial void DeleteTaiSan(TaiSan instance);
 partial void InsertTaiSan(TaiSan instance);