protected void FilterChanged() { var dv = (gridReturns.ItemsSource as DataView); if (dv == null) { return; } dv.RowFilter = SqlClientHelpers.BuildRowFilter( FilterReturned ? "Status = 'UnReturned'" : null, FilterFiled ? "Status <> 'Filed'" : null, FilterLocalOffice ? "TaxOfficeId = " + SettingsModel.TaxOfficeId.ToString(CultureInfo.InvariantCulture) : null ); }