AnnotationService.Enable(AnnotationStore) Metode

Definisi

Ruang nama:

System.Windows.Annotations

Rakitan:

PresentationFramework.dll

AnnotationService Mengaktifkan untuk digunakan dengan anotasi tertentu AnnotationStore dan menampilkan semua anotasi yang terlihat.

public:
 void Enable(System::Windows::Annotations::Storage::AnnotationStore ^ annotationStore);

public void Enable(System.Windows.Annotations.Storage.AnnotationStore annotationStore);

member this.Enable : System.Windows.Annotations.Storage.AnnotationStore -> unit

Public Sub Enable (annotationStore As AnnotationStore)

Parameter

annotationStore

AnnotationStore

Penyimpanan anotasi yang digunakan untuk membaca, menulis, dan menampilkan anotasi.

Pengecualian

ArgumentNullException

annotationStore adalah null.

Contoh

Contoh berikut menunjukkan cara menggunakan Enable metode saat Anda memulai AnnotationService.

// ------------------------ 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

Keterangan

Ketika Enable dipanggil semua anotasi di jendela kontrol penampil ditampilkan. (Kontrol penampil yang terkait dengan layanan anotasi ditentukan dalam parameter ke AnnotationService konstruktor.)

Lihat juga

• Disable()
• IsEnabled