public void Delete(Data.SOTax entity)
        {
            try
            {
                if (entity == null)
                {
                    return;
                }

                this.Table.Remove(entity);
                this.SubmitChanges();
            }
            catch
            {
                throw;
            }
        }
 private void btn_click(object sender, RoutedEventArgs e)
 {
     try
     {
         var soTax = Business.GetSOTaxBusiness().GetByFinancialYearBaseInfo(cmbFinancialYear.SelectedValue.ToGUID(), cmbBaseInfo.SelectedValue.ToGUID());
         if (soTax == null)
         {
             soTax = new Data.SOTax()
             {
                 IdBaseinfo          = cmbBaseInfo.SelectedValue.ToGUID(),
                 IdFinancialMainYear = cmbFinancialYear.SelectedValue.ToGUID(),
             }
         }
         ;
         soTax.Percent = txtPercent.Text.ToDecimal();
         Business.GetSOTaxBusiness().Save(soTax);
         this.Close();
     }
     catch
     {
         throw;
     }
 }