AnnotationService.Store Property

Reference

Definition

Namespace:: System.Windows.Annotations

Assembly:: PresentationFramework.dll

Important

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Gets the AnnotationStore used by this AnnotationService.

public:
 property System::Windows::Annotations::Storage::AnnotationStore ^ Store { System::Windows::Annotations::Storage::AnnotationStore ^ get(); };

public System.Windows.Annotations.Storage.AnnotationStore Store { get; }

member this.Store : System.Windows.Annotations.Storage.AnnotationStore

Public ReadOnly Property Store As AnnotationStore

Property Value

AnnotationStore

The AnnotationStore used by this AnnotationService.

Examples

The following example shows how to use the Store property when you start and stop an 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()

// ------------------------ StopAnnotations ---------------------------
/// <summary>
///   Disables annotation processing and hides all annotations.</summary>
private void StopAnnotations()
{
    // If the AnnotationStore is active, flush and close it.
    if (_annotStore != null)
    {
        _annotStore.Flush();
        _annotStream.Flush();
        _annotStream.Close();
        _annotStore = null;
    }

    // If the AnnotationService is active, shut it down.
    if (_annotService != null)
    {
        if (_annotService.IsEnabled)
        {
            _annotService.Disable();  // Disable the AnnotationService.
            _annotService = null;
        }
    }
}// end:StopAnnotations()

' ------------------------ 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


' ------------------------ StopAnnotations ---------------------------
''' <summary>
'''   Disables annotation processing and hides all annotations.</summary>
Private Sub StopAnnotations()
    ' If the AnnotationStore is active, flush and close it.
    If _annotStore IsNot Nothing Then
        _annotStore.Flush()
        _annotStream.Flush()
        _annotStream.Close()
        _annotStore = Nothing
    End If

    ' If the AnnotationService is active, shut it down.
    If _annotService IsNot Nothing Then
        If _annotService.IsEnabled Then
            _annotService.Disable() ' Disable the AnnotationService.
            _annotService = Nothing
        End If
    End If
End Sub

Remarks

The AnnotationStore used by the AnnotationService is specified as a parameter in the service's Enable method.

Applies to

Jaa