public static async Task ClearOutTimeArticlesAsync(this FeedViewModel feedViewModel)
{
var original = feedViewModel.Articles;
// 更新视图集合
var temp = feedViewModel.Articles.ToList();
temp.RemoveAll(x => x.UnRead == false && x.IsStarred == false);
foreach (var item in temp)
{
feedViewModel.Articles.Remove(item);
}
var ClearArticles = from x in original
where x.UnRead == false && x.IsStarred == false
select x.AbstractInfo();
await SQLiteService.RemoveArticlesAsync(ClearArticles);
}
/// <summary>
/// Delete All the Related Articles in DataBases.
/// </summary>
public static async Task RemoveRelatedArticlesAsync(this FeedViewModel feedViewModel)
{
await SQLiteService.RemoveArticlesAsync(feedViewModel.Articles.Select(article => article.AbstractInfo()));
feedViewModel.Articles.Clear();
}