AnnotationService.IsEnabled Properti

Definisi

Ruang nama:

System.Windows.Annotations

Rakitan:

PresentationFramework.dll

Mendapatkan nilai yang menunjukkan apakah AnnotationService diaktifkan.

public:
 property bool IsEnabled { bool get(); };

public bool IsEnabled { get; }

member this.IsEnabled : bool

Public ReadOnly Property IsEnabled As Boolean

Nilai Properti

Boolean

true AnnotationService jika diaktifkan; jika tidak, false.

Contoh

Contoh berikut menunjukkan cara menggunakan IsEnabled properti saat Anda membuat dan memulai AnnotationService. Selain itu, jika pengguna memilih untuk membuka dokumen baru di kontrol penampil, AnnotationService harus dinonaktifkan untuk dokumen lama lalu diaktifkan untuk dokumen baru.

// ------------------------ StartAnnotations --------------------------
/// <summary>
///   Enables annotations and displays all that are viewable.</summary>
private void StartAnnotations()
{
    // If there is no AnnotationService yet, create one.
    if (_annotService == null)
        // docViewer is a document viewing control named in Window1.xaml.
        _annotService = new AnnotationService(docViewer);

    // If the AnnotationService is currently enabled, disable it.
    if (_annotService.IsEnabled)
        _annotService.Disable();

    // Open a stream to the file for storing annotations.
    _annotStream = new FileStream(
        _annotStorePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);

    // Create an AnnotationStore using the file stream.
    _annotStore = new XmlStreamStore(_annotStream);

    // Enable the AnnotationService using the new store.
    _annotService.Enable(_annotStore);
}// end:StartAnnotations()

' ------------------------ StartAnnotations --------------------------
''' <summary>
'''   Enables annotations and displays all that are viewable.</summary>
Private Sub StartAnnotations()
    ' If there is no AnnotationService yet, create one.
    If _annotService Is Nothing Then
        ' docViewer is a document viewing control named in Window1.xaml.
        _annotService = New AnnotationService(docViewer)
    End If

    ' If the AnnotationService is currently enabled, disable it.
    If _annotService.IsEnabled = True Then
        _annotService.Disable()
    End If

    ' Open a stream to the file for storing annotations.
    _annotStream = New FileStream(_annotStorePath, FileMode.OpenOrCreate, FileAccess.ReadWrite)

    ' Create an AnnotationStore using the file stream.
    _annotStore = New XmlStreamStore(_annotStream)

    ' Enable the AnnotationService using the new store.
    _annotService.Enable(_annotStore)
End Sub

Lihat juga

• Enable(AnnotationStore)
• Disable()