partial void DeletetbHoaDon(tbHoaDon instance);
 partial void UpdatetbHoaDon(tbHoaDon instance);
 partial void InserttbHoaDon(tbHoaDon instance);
		private void detach_tbHoaDons(tbHoaDon entity)
		{
			this.SendPropertyChanging();
			entity.tbBenhNhan = null;
		}
		private void attach_tbHoaDons(tbHoaDon entity)
		{
			this.SendPropertyChanging();
			entity.tbNhanVien = this;
		}