AnnotationService.Enable(AnnotationStore) 方法

定義

命名空間:
System.Windows.Annotations
組件:
PresentationFramework.dll

啟用 以 AnnotationService 特定方式使用 AnnotationStore ，並顯示所有可見的註解。

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)

參數

annotationStore
AnnotationStore

註解儲存庫用於閱讀、書寫及顯示註解。

例外狀況

ArgumentNullException

annotationStore 是 null。

範例

以下範例說明了當你開始 Enable時如何使用該AnnotationService方法。

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

備註

當 Enable 呼叫時，檢視器控制視窗中的所有註解都會顯示。 （與註解服務相關的檢視控制項在建構子參數中指定 AnnotationService 。）

適用於

另請參閱