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POCancel speech synthesis in windows phone 8
 

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    <p>I add a speech synthesis to my app. It works but the problem is I can't cancel the speech...For example, when I navigate to another page, the speech continues... So, I call CancelAll() method to cancel the current speech but an exception is occured and I don't know why. Do you know what's the problem?</p> <p>The exception</p> <pre><code>A first chance exception of type 'System.Threading.Tasks.TaskCanceledException' occurred in mscorlib.ni.dll An exception of type 'System.Threading.Tasks.TaskCanceledException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary An exception of type 'System.Threading.Tasks.TaskCanceledException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary The program '[2576] TaskHost.exe' has exited with code -1 (0xffffffff). </code></pre> <p>My code:</p> <pre><code> private SpeechSynthesizer synth = new SpeechSynthesizer(); protected override void OnBackKeyPress(CancelEventArgs e) { //I tried to cancel also here but it's the same exception... } //method called when I press a button Cancel private void ButtonCancelSpeech(object sender, EventArgs eventArgs) { try { synth.CancelAll(); } catch (TaskCanceledException) { //I arrive in this exception } } private async void BtnSpeech_Click(object sender, EventArgs e) { IEnumerable&lt;VoiceInformation&gt; voices = from voice in InstalledVoices.All where voice.Language.Substring(0, 2).Equals(LanguageApp.GetLangage2Characters()) select voice; if (voices.ElementAt(0) != null) { // Set the voice as identified by the query. synth.SetVoice(voices.ElementAt(0)); await synth.SpeakTextAsync(_place.Description); } } </code></pre> <p>Thank you</p>
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