IAnchorInfo Interface

 

Provides the capabilities for matching annotations with the corresponding annotated objects.

Namespace:   System.Windows.Annotations
Assembly:  PresentationFramework (in PresentationFramework.dll)

Public Interface IAnchorInfo

NameDescription
System_CAPS_pubpropertyAnchor

Gets the anchor of the annotation.

System_CAPS_pubpropertyAnnotation

Gets the annotation object.

System_CAPS_pubpropertyResolvedAnchor

Gets the object that represents the location on the tree where the Anchor is resolved.

IAnchorInfo is introduced in the Microsoft .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

Consider a simple document reader application that has a comments pane. The comments pane might be a list box that displays the text from a list of annotations that are anchored to a document. If the user selects an item in the list box, then the application brings into view the paragraph in the document that the corresponding annotation object is anchored to.

The following example demonstrates how to implement the event handler of such a list box that serves as the comments pane:

Private Sub annotationsListBox_SelectionChanged(ByVal sender As Object, ByVal e As SelectionChangedEventArgs)

	Dim comment As Annotation = TryCast((TryCast(sender, ListBox)).SelectedItem, Annotation)
	If comment IsNot Nothing Then
              ' service is an AnnotationService object
		' comment is an Annotation object
		info = AnnotationHelper.GetAnchorInfo(Me.service, comment)
		Dim resolvedAnchor As TextAnchor = TryCast(info.ResolvedAnchor, TextAnchor)
		Dim textPointer As TextPointer = CType(resolvedAnchor.BoundingStart, TextPointer)
		textPointer.Paragraph.BringIntoView()
	End If
End Sub

.NET Framework
Available since 3.0
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