/// <summary>
/// Invoked when application execution is being suspended. Application state is saved
/// without knowing whether the application will be terminated or resumed with the contents
/// of memory still intact.
/// </summary>
/// <param name="sender">The source of the suspend request.</param>
/// <param name="e">Details about the suspend request.</param>
void App_Suspending(object sender, SuspendingEventArgs e)
{
var deferral = e.SuspendingOperation.GetDeferral();
PagesUtils.ChangePlayState(MediaElementState.Paused);
DACFactory.Instance.Quit();
deferral.Complete();
}
void App_Resuming(object sender, object e)
{
DACFactory.Instance.StartUp();
PagesUtils.ChangePlayState(MediaElementState.Playing);
}