private async void HandleStopReceiverClicked(Object sender, RoutedEventArgs e)
        {
            try
            {
                if (_receiver != null)
                {
                    await _receiver.StopAsync();

                    // The DisplayRequest should be released as soon as it is not needed anymore
                    if (_displayRequest != null)
                    {
                        _displayRequest.RequestRelease();
                        _displayRequest = null;
                    }

                    // Remove Play To Receiver events
                    _receiver.SourceChangeRequested       -= HandleReceiverSourceChangeRequested;
                    _receiver.PlayRequested               -= HandleReceiverPlayRequested;
                    _receiver.PauseRequested              -= HandleReceiverPauseRequested;
                    _receiver.StopRequested               -= HandleReceiverStopRequested;
                    _receiver.PlaybackRateChangeRequested -= HandleReceiverPlaybackRateChangeRequested;
                    _receiver.CurrentTimeChangeRequested  -= HandleReceiverCurrentTimeChangeRequested;
                    _receiver.TimeUpdateRequested         -= HandleReceiverTimeUpdateRequested;
                    _receiver.MuteChangeRequested         -= HandleReceiverMuteChangeRequested;
                    _receiver.VolumeChangeRequested       -= HandleReceiverVolumeChangeRequested;

                    //  Remove MediaElement events
                    VideoPlayer.Pause();

                    StatusText.Text = "Stopped '" + _receiver.FriendlyName + "'.";
                }
            }
            catch
            {
                var friendlyName = _receiver == null ? String.Empty : _receiver.FriendlyName;
                StatusText.Text = "Failed to stop '" + friendlyName + "'.";
            }
        }
        /// <summary>
        /// This is the click handler for the 'Other' button.  You would replace this with your own handler
        /// if you have a button or buttons on this page.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        async private void stopPlayToReceiver(object sender, RoutedEventArgs e)
        {
            Button b = sender as Button;

            if (b != null)
            {
                try
                {
                    startDMRButton.IsEnabled = true;
                    stopDMRButton.IsEnabled  = false;
                    await receiver.StopAsync();

                    IsReceiverStarted = false;
                    rootPage.NotifyUser("PlayToReceiver stopped", NotifyType.StatusMessage);
                }
                catch (Exception ecp)
                {
                    IsReceiverStarted        = true;
                    startDMRButton.IsEnabled = false;
                    stopDMRButton.IsEnabled  = true;
                    rootPage.NotifyUser("PlayToReceiver stop failed, Error " + ecp.Message, NotifyType.ErrorMessage);
                }
            }
        }