private async Task InsertTodayWallpaperAsync()
{
var date = DateTime.Now.ToString("yyyyMMdd");
if (DataVM.DataList.Count > 0 && DataVM.DataList[0].Image.ID != date)
{
var image = UnsplashImageFactory.CreateTodayImage();
var imageItem = new ImageItem(image);
DataVM.DataList.Insert(0, imageItem);
imageItem.Init();
await imageItem.DownloadBitmapForListAsync();
}
}
