private async void ExportWordLisButtonClick(object sender, RoutedEventArgs e) { var fileSavePicker = new FileSavePicker(); fileSavePicker.FileTypeChoices.Add(".csv", new List <string> { ".csv" }); fileSavePicker.SettingsIdentifier = "picker1"; var fileToSave = await fileSavePicker.PickSaveFileAsync(); if (fileToSave == null) { return; } WritePadAPI.exportAutocorrectorDictionary(fileToSave.Path); }