AnnotationService.IsEnabled Özellik

Tanım

Ad Alanı:

System.Windows.Annotations

Bütünleştirilmiş Kod:

PresentationFramework.dll

öğesinin etkinleştirilip etkinleştirilmediğini AnnotationService belirten bir değer alır.

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

public bool IsEnabled { get; }

member this.IsEnabled : bool

Public ReadOnly Property IsEnabled As Boolean

Özellik Değeri

Boolean

trueAnnotationService etkinse; etkin değilse, false.

Örnekler

Aşağıdaki örnekte, bir AnnotationServiceoluştururken ve başlatırken özelliğinin nasıl kullanılacağı IsEnabled gösterilir. Ayrıca, kullanıcı görüntüleyici denetiminde yeni bir belge açmayı seçerse, AnnotationService eski belge için devre dışı bırakılmalı ve ardından yeni belge için etkinleştirilmelidir.

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

Ayrıca bkz.

• Enable(AnnotationStore)
• Disable()