AnnotationService.IsEnabled Propriété

Définition

Espace de noms:

System.Windows.Annotations

Assembly:

PresentationFramework.dll

Obtient une valeur qui indique si la AnnotationService est activée.

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

public bool IsEnabled { get; }

member this.IsEnabled : bool

Public ReadOnly Property IsEnabled As Boolean

Valeur de propriété

Boolean

true si AnnotationService est activé ; sinon, false.

Exemples

L’exemple suivant montre comment utiliser la IsEnabled propriété lorsque vous créez et démarrez un AnnotationService. En outre, si l’utilisateur choisit d’ouvrir un nouveau document dans le contrôle visionneuse, AnnotationService le doit être désactivé pour l’ancien document, puis activé pour le nouveau document.

// ------------------------ 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 == true)
        _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

Voir aussi

• Enable(AnnotationStore)
• Disable()