public void ShowCustomBalloon(int timeoutInMilliseconds)
        {
            var syncBalloon = new SyncBalloon();

            syncBalloon.DataContext = DataContext;
            ShowCustomBalloon(syncBalloon, PopupAnimation.Slide, timeoutInMilliseconds);
        }
        public void ShowCustomBalloon()
        {
            var syncBalloon = new SyncBalloon();

            syncBalloon.DataContext = DataContext;
            ShowCustomBalloon(syncBalloon, PopupAnimation.Slide, null);
        }