protected override async void OnNavigatedTo(NavigationEventArgs e) { base.OnNavigatedTo(e); _cover = e.Parameter as Cover; _viewModel = new DateDetailViewModel(_cover); await DispatcherHelper.ExecuteOnUIThreadAsync(async() => { _viewModel.LoadImages(); using (var db = new Context()) { var folders = db.Folders.Select(folder => new Folder(folder)).ToList(); await _cover.SetOriginalImageAsync(folders); } }); }