Windows phone 8 make async method behave like its sync

Question

I am new to async programming and I am wondering if you can fake c# async methods to make it work like its sync? Or if you can make it wait for it to complete before executing another method?

In my case :

await Speak("Do you want me to call 123 ?"); if (isComplete) { PhoneCallTask phone = new PhoneCallTask(); phone.PhoneNumber = "123"; phone.Show(); } await Speak("blabla");

isComplete is global boolean..

here is Speak method:

private async Task Speak(string text) { SpeechSynthesizer synth = new SpeechSynthesizer(); await synth.SpeakTextAsync(text); isComplete = true; }

It says first text, than shows dialog.. after dialog is cloes it crashes..

Why do you want to do that? Purpose of the async methods are to work asynchronously. — Sam
– Sam, Commented Sep 11, 2014 at 6:35
I am using Text to speech, and then showing some call dialog, and when i show call dialog app crashes, because this dialog breaks speech because its async.. thats why i would like to wait for speech to complete and then run call dialog.. — n32303
– n32303, Commented Sep 11, 2014 at 6:37

Sam · Accepted Answer · 2014-09-11 06:47:48Z

You can use await keyword

See following example taken from MSDN

// Declare the SpeechSynthesizer object at the class level. SpeechSynthesizer synth; // Handle the button click event. private async void SpeakFrench_Click_1(object sender, RoutedEventArgs e) { // Initialize the SpeechSynthesizer object. synth = new SpeechSynthesizer(); // Query for a voice that speaks French. IEnumerable<VoiceInformation> frenchVoices = from voice in InstalledVoices.All where voice.Language == "fr-FR" select voice; // Set the voice as identified by the query. synth.SetVoice(frenchVoices.ElementAt(0)); // Count in French. await synth.SpeakTextAsync("un, deux, trois, quatre"); }

I am actually doing this.. SpeechSynthesizer synth = new SpeechSynthesizer(); await synth.SpeakTextAsync(text); and after that I call phoneCallTask.Show() and dialog pops up, and when I close it, exception is thrown and it says that speech has been disrupted by a phone call...
I have added boolean at the end of speak method, and now speech is executed before call dialog.. but however, when i call dialog is closed, and i want to go back to speech, app crashes

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