private void OnNotifyRefresh(KeyValuePair<string, List<IStorageFile>> item)
 {
     NotifyRefreshEventArgs e = new NotifyRefreshEventArgs(item);
     this.notifyrefresh(this, e);
 }
        private void Albums_notifyrefresh(object sender, NotifyRefreshEventArgs e)
        {
#pragma warning disable CS4014 // 由于此调用不会等待,因此在调用完成前将继续执行当前方法
            this.Dispatcher.RunAsync(CoreDispatcherPriority.High, () =>
            {
                if (e != null)
                {
                    Albums.RefreshtoList(e.item);
                }
                else
                {
                    ((Window.Current.Content as Frame).Content as MainPage).FinishCreate();
                    Albums.notifyrefresh -= Albums_notifyrefresh;
                }
            });
#pragma warning restore CS4014 // 由于此调用不会等待,因此在调用完成前将继续执行当前方法
        }