我有一个UWP应用程序，它应该在网格中显示来自磁盘的图像。图像路径是在运行时从数据库中获取的。它不能保证用户知道要显示的图像在哪里，所以使用文件夹拾取器是行不通的。
我已经给了这个应用程序broadFileSystemAccess功能。绑定绝对路径似乎仍然不起作用。我现在唯一的解决方案是在我得到路径列表后立即创建一个流作为源的BitmapImage。然而，这带来了一个严重的内存问题。有人能给我一个解决方案吗？
图片库页面.xaml的相关部分：

<GridView
    Grid.Row="4"
    Grid.Column="0"
    Grid.ColumnSpan="5"
    Padding="{StaticResource MediumLeftRightMargin}"
    animations:Connected.ListItemElementName="thumbnailImage"
    animations:Connected.ListItemKey="galleryAnimationKey"
    IsItemClickEnabled="True"
    ItemsSource="{x:Bind ViewModel.Source, Mode=OneWay}"
    SelectionMode="None">
    <i:Interaction.Behaviors>
        <ic:EventTriggerBehavior EventName="ItemClick">
            <ic:InvokeCommandAction Command="{x:Bind ViewModel.ItemSelectedCommand}" />
        </ic:EventTriggerBehavior>
    </i:Interaction.Behaviors>
    <GridView.ItemTemplate>
        <DataTemplate x:DataType="models:GalleryImage">
            <Image
                x:Name="thumbnailImage"
                AutomationProperties.Name="{Binding Name}"
                ToolTipService.ToolTip="{Binding Name}"
                Source="{x:Bind Mode=OneWay, Path=ImgBitmapImage}"
                Style="{StaticResource ThumbnailImageStyle}" />
        </DataTemplate>
    </GridView.ItemTemplate>
</GridView>

图片库Page.xaml.cs的相关部分：

public ImageGalleryPage()
{
    InitializeComponent();
    Loaded += ImageGalleryPage_Loaded;
}

private async void ImageGalleryPage_Loaded(object sender, RoutedEventArgs e)
{
    Combo_Labels.ItemsSource = await SqlServerClassnamesService.FetchClassnames();
    await ViewModel.LoadDataAsync();
}

ImageGalleryViewModel.cs:

public class ImageGalleryViewModel : ObservableObject
{
    public ObservableCollection<GalleryImage> Source { get; } = new ObservableCollection<GalleryImage>();

    public async Task LoadDataAsync()
    {
        Source.Clear();

        var data = await SqlServerDataService.GetCollection();

        foreach (var item in data)
        {
             await HandleImages(item);
        }
    }

    private async Task HandleImages(GalleryImage img)
    {
        StorageFile file = await StorageFile.GetFileFromPathAsync(img.Path);
        var stream = await file.OpenAsync(FileAccessMode.Read);
        var bitmapImage = new BitmapImage();
        await bitmapImage.SetSourceAsync(stream);
        img.Image = bitmapImage;
        Source.Add(img);
    }
}

GalleryImage.cs:

public class GalleryImage
{
    public string ID { get; set; }

    public string Name { get; set; }

    public string Path { get; set; }

    public BitmapImage Image { get; set; }

    public BitmapImage ImgBitmapImage
    {
        get => Image != null ? Image : new BitmapImage(new Uri(Path));
    }
}