public bool OpenVideoGallery()
        {
            GalleryWindow w = Container.AddGallery("video", "Video Gallery"); //TODO: use PivotDialog instead, invoked by talking to newly added video component

            w.ResizeToView();
            return(true); //TODO: return false if user cancelled PivotDialog
        }
        public bool OpenImageGallery()
        {
            GalleryWindow w = Container.AddGallery("images", "Image Gallery"); //TODO: use PivotDialog instead to get URL, invoked by talking to newly added image component

            w.ResizeToView();
            return(true); //TODO: return false if user cancelled PivotDialog
        }
        public bool OpenActivityGallery()
        {
            GalleryWindow w = Container.AddGallery("activities", "Activity Gallery"); //TODO: use PivotDialog instead, then load activity

            w.ResizeToView();
            return(true); //TODO: return false if user cancelled PivotDialog
        }