StorageLibrary.AreFolderSuggestionsAvailableAsync Methode

Definition

Namespace:

Windows.Storage

Bestimmt, ob Vorschläge zum Hinzufügen vorhandener Ordner mit Inhalt zur StorageLibrary vorhanden sind.

public:
 virtual IAsyncOperation<bool> ^ AreFolderSuggestionsAvailableAsync() = AreFolderSuggestionsAvailableAsync;

/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<bool> AreFolderSuggestionsAvailableAsync();

[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<bool> AreFolderSuggestionsAvailableAsync();

function areFolderSuggestionsAvailableAsync()

Public Function AreFolderSuggestionsAvailableAsync () As IAsyncOperation(Of Boolean)

Gibt zurück

IAsyncOperation<Boolean>

IAsyncOperation<bool>

True , wenn Ordnervorschläge vorhanden sind; False andernfalls

Attribute

RemoteAsyncAttribute

Windows-Anforderungen

Gerätefamilie	Windows 10 Fall Creators Update (eingeführt in 10.0.16299.0)
API contract	Windows.Foundation.UniversalApiContract (eingeführt in v5.0)

Beispiele

In diesem Beispiel wird veranschaulicht, wie Sie ermitteln, ob vorgeschlagene Ordner mit Inhalten vorhanden sind, die Ihrer Bildbibliothek hinzugefügt werden können.

private async Task<StorageLibrary> SetupPicturesLibraryAsync()
{
    if (this.picturesLibrary == null)
    {
        this.picturesLibrary = await StorageLibrary.GetLibraryAsync(KnownLibraryId.Pictures);
        this.picturesLibrary.DefinitionChanged += PicturesLibrary_DefinitionChanged;
    }
    return this.picturesLibrary;
}

private async void CheckForFolderSuggestions_Clicked(object sender, RoutedEventArgs e)
{
    var library = await SetupPicturesLibraryAsync();

    if (await library.AreFolderSuggestionsAvailableAsync())
    {
        // There are new folders that could be added to the library.
        // Prompt the user to add one or more of them. 

        // Note that the RequestAddFolderAsync method returns only one folder.
        // If the user adds multiple folders, only one will be returned.
        // In this example, to keep track of all the added folders, the app can subscribe to the
        // StorageLibrary.DefinitionChanged event by awaiting library.RequestAddFolderAsync();

        // Launch the folder suggestion dialog
        var folder = await library.RequestAddFolderAsync(); 
    }
}

private void PicturesLibrary_DefinitionChanged(StorageLibrary sender, object args)
{
    foreach (StorageFolder folder in sender.Folders)
    {
        // Do something with every folder in the library
    }
}

Hinweis

Vergessen Sie nicht, die Funktion picturesLibrary in das Paketmanifest Ihrer App aufzunehmen. Weitere Informationen zu Funktionen im Manifest finden Sie unter App-Funktionsdeklarationen.

Hinweise

Wenn dieses Feature in Ihrer Windows-Version nicht unterstützt wird, gibt die Methode false zurück.