private void attach_HOADONs(HOADON entity)
		{
			this.SendPropertyChanging();
			entity.NGUOIDUNG = this;
		}
 partial void DeleteHOADON(HOADON instance);
 partial void InsertHOADON(HOADON instance);
 partial void UpdateHOADON(HOADON instance);
		private void detach_HOADONs(HOADON entity)
		{
			this.SendPropertyChanging();
			entity.NGUOIDUNG = null;
		}