public void RefreshDeviceBookmarks() { if (IsPageEnabled) { List <Bookmark> serviceBookmarks = null; BackgroundHelper.Execute(() => { serviceBookmarks = BookmarkService.RetrieveDeviceBookmarks(); BackgroundHelper.ExecuteUIThread(() => { DeviceBookmarks.Clear(); foreach (Bookmark bookmark in serviceBookmarks) { DeviceBookmarks.Add(new ItemViewModel() { Title = bookmark.Title, Url = bookmark.Url }); } }); }); } }