Question

我想要使用XAML绑定到GridView的视频列表。我使用以下代码以编程方式执行了该操作：

private async void pageRoot_Loaded(object sender, RoutedEventArgs e) {
    IList<string> fileTypeFilter = new List<string> { ".avi", ".mkv", ".mp4" };
    QueryOptions queryOptions = new QueryOptions(CommonFileQuery.OrderByName, fileTypeFilter);
    queryOptions.FolderDepth = FolderDepth.Deep;
    queryOptions.IndexerOption = IndexerOption.UseIndexerWhenAvailable;

    StorageFileQueryResult videoFileQuery = KnownFolders.VideosLibrary.CreateFileQueryWithOptions(queryOptions);
    IReadOnlyList<StorageFile> dataSource = await videoFileQuery.GetFilesAsync();

    videoGridView.ItemsSource = dataSource; //Yep, that works :)
}

但是，我想在XAML中拥有这个绑定。所以我更改了XAML GridView并删除了上述代码的最后一行：

<GridView x:Name="videoGridView" Grid.Row="1" ItemsSource="{Binding dataSource}"/>

现在只有GridView为空。

我该怎么做才能实现这个目标？

Answer 1

只需进行2次更改。首先，代替发布代码的最后一行，写下以下

this.DataContext = dataSource;

然后将Grid更改为此

<GridView x:Name="videoGridView" Grid.Row="1" ItemsSource="{Binding}"/>

Answer 2

尝试绑定到ObservableCollection类型的源＆lt; StorageFile＆gt;

如何将GridView绑定到XAML中的视频列表？

2 个答案: