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