// Speaks the content of a standalone SSML file. private async void SpeakSsmlFromFile_Click(object sender, RoutedEventArgs e) { try // error handling { // Disable the ListBoxes to prevent exceptions VoicesListBox.IsEnabled = false; LanguagesListBox.IsEnabled = false; // Stop playing any Synthesized speech _speechSynthesizer.CancelAll(); // Set the path to the SSML-compliant XML file. string path = Package.Current.InstalledLocation.Path + "\\SSMLExample.xml"; Uri fileToRead = new Uri(path, UriKind.Absolute); // Speak the SSML prompt. await _speechSynthesizer.SpeakSsmlFromUriAsync(fileToRead); MessageBox.Show("SSML file read."); // Re-enable the ListBoxes VoicesListBox.IsEnabled = true; LanguagesListBox.IsEnabled = true; } catch (Exception ex) // Catch exception and call function to handle it. { HandleSpeechSynthesisError(ex); } }