private void OnRemoveTaxPayerCommand()
 {
     if (SelectLinkTaxPayerEntity != null)
     {
         TaxPayerEntityLinkList.Remove(SelectLinkTaxPayerEntity);
         UpdateChanged("TaxPayerEntityLinkList");
     }
 }
        private void OnAddToTaxPayerCommand()
        {
            if (SelectTaxPayerEntity != null)
            {
                bool lIsAdded = false;
                foreach (TaxPayerEntity taxPayerEntity in TaxPayerEntityLinkList)
                {
                    if (taxPayerEntity.TaxPayerId == SelectTaxPayerEntity.TaxPayerId)
                    {
                        lIsAdded = true;
                        break;
                    }
                }

                if (!lIsAdded)
                {
                    TaxPayerEntityLinkList.Add(SelectTaxPayerEntity);
                    UpdateChanged("TaxPayerEntityLinkList");
                }
            }
        }