Playlist Klasse

Definition

public ref class Playlist sealed

/// [Windows.Foundation.Metadata.Activatable(65536, Windows.Media.Playlists.PlaylistsContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Media.Playlists.PlaylistsContract, 65536)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class Playlist final

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Media.Playlists.PlaylistsContract, 65536)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Media.Playlists.PlaylistsContract")]
class Playlist final

[Windows.Foundation.Metadata.Activatable(65536, typeof(Windows.Media.Playlists.PlaylistsContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Media.Playlists.PlaylistsContract), 65536)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class Playlist

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Media.Playlists.PlaylistsContract), 65536)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Media.Playlists.PlaylistsContract")]
public sealed class Playlist

function Playlist()

Public NotInheritable Class Playlist

Vererbung

Object Platform::Object IInspectable Playlist

Attribute

ActivatableAttribute ContractVersionAttribute ThreadingAttribute

Windows-Anforderungen

Beispiele

Dieses Beispiel ist ein Auszug aus dem Wiedergabelistenbeispiel. Sehen Sie sich das Beispiel für die vollständige Lösung an.

// Create and save a playlist from a set of audio files.
async private void PickAudioButton_Click(object sender, RoutedEventArgs e)
{
    FileOpenPicker picker = MainPage.CreateFilePicker(MainPage.audioExtensions);
    IReadOnlyList<StorageFile> files = await picker.PickMultipleFilesAsync();

    if (files.Count > 0)
    {
        Playlist playlist = new Playlist();

        foreach (StorageFile file in files)
        {
            playlist.Files.Add(file);
        }

        StorageFolder folder = KnownFolders.MusicLibrary;
        string name = "Sample";
        NameCollisionOption collisionOption = NameCollisionOption.ReplaceExisting;
        PlaylistFormat format = PlaylistFormat.WindowsMedia;

        try
        {
            StorageFile savedFile = await playlist.SaveAsAsync(folder, name, collisionOption, format);
            this.rootPage.NotifyUser(savedFile.Name + " was created and saved with " + files.Count + " files.", NotifyType.StatusMessage);
        }
        catch (Exception error)
        {
            rootPage.NotifyUser(error.Message, NotifyType.ErrorMessage);
        }
    }
    else
    {
        rootPage.NotifyUser("No files picked.", NotifyType.ErrorMessage);
    }
}

// Pick playlist and display its contents.
async private void PickPlaylistButton_Click(object sender, RoutedEventArgs e)
{
    Playlist playlist = await PickPlaylistAsync();

    if (playlist != null)
    {
        string result = "Songs in playlist: " + playlist.Files.Count.ToString() + "\n";

        foreach (StorageFile file in playlist.Files)
        {
            MusicProperties properties = await file.Properties.GetMusicPropertiesAsync();
            result += "\n";
            result += "File: " + file.Path + "\n";
            result += "Title: " + properties.Title + "\n";
            result += "Album: " + properties.Album + "\n";
            result += "Artist: " + properties.Artist + "\n";
        }

        this.OutputStatus.Text = result;
    }
}

private async Task<Playlist> PickPlaylistAsync()
{
    FileOpenPicker picker = CreateFilePicker(MainPage.playlistExtensions);
    StorageFile file = await picker.PickSingleFileAsync(); 

    if (file == null)
    {
        NotifyUser("No playlist picked.", NotifyType.ErrorMessage);
        return null;
    }

    try
    {
        return await Playlist.LoadAsync(file);
    }
    catch (Exception ex)
    {
        NotifyUser(ex.Message, NotifyType.ErrorMessage);
        return null;
    }
}

Hinweise

Diese API wird zum Speichern und Laden von Wiedergabelistendateien auf und von datenträgern verwendet. Informationen zum Wiedergeben von Listen von Medienelementen finden Sie unter Medienelemente, Wiedergabelisten und Titel.

Konstruktoren

Eigenschaften

Methoden

Gilt für:

Weitere Informationen

• Wiedergabelistenbeispiel