public static async Task <bool> CheckIfNeedToUpdate()
{
try
{
if (await FileSystemStorageItemBase.OpenAsync(ApplicationData.Current.TemporaryFolder.Path) is FileSystemStorageFolder TempFolder)
{
IEnumerable <FileSystemStorageItemBase> AllPreviousPictureList = await TempFolder.GetChildItemsAsync(false, false, Filter : ItemFilters.File, AdvanceFilter : (Name) => Name.StartsWith("BingDailyPicture_Cache", StringComparison.OrdinalIgnoreCase));
if (AllPreviousPictureList.All((Item) => DateTime.TryParseExact(Regex.Match(Item.Name, @"(?<=\[)(.+)(?=\])").Value, "yyyy-MM-dd HH-mm-ss", CultureInfo.InvariantCulture, DateTimeStyles.AssumeLocal, out DateTime LastUpdateDate) && LastUpdateDate < DateTime.Now.Date))
{
foreach (FileSystemStorageItemBase ToDelete in AllPreviousPictureList)
{
await ToDelete.DeleteAsync(true);
}
return(true);
}
else
{
return(false);
}
}
else
{
return(false);
}
}