private void detach_BillDemandContractMoneys(BillDemandContractMoney entity)
		{
			this.SendPropertyChanging();
			entity.BillDemand = null;
		}
		private void attach_BillDemandContractMoneys(BillDemandContractMoney entity)
		{
			this.SendPropertyChanging();
			entity.Month1 = this;
		}
 partial void UpdateBillDemandContractMoney(BillDemandContractMoney instance);
 partial void DeleteBillDemandContractMoney(BillDemandContractMoney instance);
 partial void InsertBillDemandContractMoney(BillDemandContractMoney instance);