public VoiceAttachmentView()
        {
            InitializeComponent();

            InitializeAppBarText();

            micHelper = new MicHelper();
            micHelper.RecordingStopped += micHelper_RecordingStopped;
            micHelper.PlaybackStopped += micHelper_PlaybackStopped;

            attachmentSet = false;
        }
        protected override void OnNavigatedFrom(System.Windows.Navigation.NavigationEventArgs e)
        {
            micHelper = null;

            base.OnNavigatedFrom(e);
        }