private void TaxPayerWindow_Closed(object sender, EventArgs e)
        {
            ChildWindow lTaxPayerWindow = sender as ChildWindow;

            if (lTaxPayerWindow.DialogResult == true)
            {
                IsBusy = true;
                Log.ModifyLog(documentManagerContext, SelectTaxPayerEntity.ToString());
                SubmitOperation lSubmitOperation = documentManagerContext.SubmitChanges();
                lSubmitOperation.Completed += SubOperation_Completed;
            }
        }
        void DeleteTaxPayerConfirm_Closed(object sender, EventArgs e)
        {
            ConfirmWindow lConfirmWindow = sender as ConfirmWindow;

            if (lConfirmWindow.DialogResult == true)
            {
                documentManagerContext.taxpayers.Remove(SelectTaxPayerEntity.TaxPayer);
                Log.DeleteLog(documentManagerContext, SelectTaxPayerEntity.ToString());
                SubmitOperation lSubmitOperation = documentManagerContext.SubmitChanges();
                lSubmitOperation.Completed += SubOperation_Completed;
            }
        }