void DeleteAltExecute(object param)
        {
            if (SelectedAltContractRate != null)
            {
                RemoveWeakEventListener(SelectedAltContractRate, ContractAltRateListener);
                this.ContractRateAltTarget.Remove(SelectedAltContractRate);

                AltContractRates.Remove(SelectedAltContractRate);
                if (AltContractRates.Count >= 1)
                {
                    SelectedAltContractRate = AltContractRates[0];
                }
                else
                {
                    SelectedAltContractRate = null;
                }
            }
        }
        public void ClearOutPendingAdds()
        {
            foreach (ContractRate contractRate in this.ContractRates)
            {
                if (contractRate.CONTRACT_RATE_ID == 0)
                {
                    ContractRates.Remove(contractRate);
                    break;
                }
            }

            foreach (ContractRateAlt contractRateAlt in AltContractRates)
            {
                if (contractRateAlt.RATE_NBR == 0)
                {
                    AltContractRates.Remove(contractRateAlt);
                    break;
                }
            }
        }