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AnnotationService.Enable(AnnotationStore) Método

  • Referencia

Definición

Espacio de nombres:
System.Windows.Annotations
Ensamblado:
PresentationFramework.dll

Habilita un AnnotationService que se utiliza con un AnnotationStore determinado y muestra todas las anotaciones visibles.

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)

Parámetros

annotationStore
AnnotationStore

Almacén de anotaciones que se utiliza para leer, escribir y mostrar anotaciones.

Excepciones

ArgumentNullException

annotationStore es null.

Ejemplos

En el ejemplo siguiente se muestra cómo usar el Enable método al iniciar un 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

Comentarios

Cuando Enable se llama a todas las anotaciones de la ventana de control del visor se muestran. (El control de visor asociado al servicio de anotación se especifica en el parámetro para el AnnotationService constructor).

Se aplica a

Consulte también