void Decode_Click(object sender, RoutedEventArgs e) { var trace = stackTrace.Text; if (optSym.IsChecked ?? true) stackTrace.Text = mapSymbolMatcher.Replace(trace, DecodeSymbolMap); else { renamer = new ReversibleRenamer(PassBox.Text); stackTrace.Text = passSymbolMatcher.Replace(trace, DecodeSymbolPass); } }