Documents Annotations Interview Questions & FAQs

Questions and answers for Documents Annotations.

23. Documents Annotations

23.1 How can I Match Annotations with Annotated Objects ?

23.2 How can I create an application that is used to declare a Context Menu with routed commands that the users can access to create and manage annotations ?

23.1 How can I Match Annotations with Annotated Objects ?

You can match annotations with the corresponding annotated objects. For example, consider a simple document reader application that has a comments pane. The comments pane might be a listbox that displays the text from a list of annotations that are anchored to a document. If the user selects an item in the listbox, then the application brings into view the paragraph in the document that the corresponding annotation object is anchored to.

The following piece of C # code demonstrates how to implement the event handler of such a listbox that serves as the comments pane.

[C#] void annotationsListBox_SelectionChanged(object sender, SelectionChangedEventArgs e) { Annotation comment = (sender as ListBox).SelectedItem as Annotation; if (comment != null) { // IAnchorInfo info; // service is an AnnotationService object // comment is an Annotation object

info = AnnotationHelper.GetAnchorInfo(this.service, comment); TextAnchor resolvedAnchor = info.ResolvedAnchor as TextAnchor; TextPointer textPointer = (TextPointer)resolvedAnchor.BoundingStart; textPointer.Paragraph.BringIntoView(); } }

23.2 How can I create an application that is used to declare a Context Menu with routed commands that the users can access to create and manage annotations ?

Users typically create annotations by first selecting some text or an item of interest and then right-clicking to display a context menu of annotation options.

The following example shows the XAML you can use to declare a Context Menu with routed commands that users can access to create and manage annotations.


														[XAML]
														
														<DocumentViewer.ContextMenu>
														<ContextMenu>
														<MenuItem Command="ApplicationCommands.Copy" />
														<Separator />
														<!-- Add a Highlight annotation to a user selection. -->
														<MenuItem 
															Command="ann:AnnotationService.CreateHighlightCommand"
														Header="Add Highlight" />
														
															 
														<!-- Add a Text Note annotation to a user selection. -->
														<MenuItem 
															Command="ann:AnnotationService.CreateTextStickyNoteCommand"
														Header="Add Text Note" />
														<!-- Add an Ink Note annotation to a user selection. -->
														<MenuItem 
															Command="ann:AnnotationService.CreateInkStickyNoteCommand"
														Header="Add Ink Note" />
														<Separator />
														
															



  
														<!-- Remove Highlights from a user selection. -->
														<MenuItem 
															Command="ann:AnnotationService.ClearHighlightsCommand"
														Header="Remove Highlights" />
														<!-- Remove Text Notes and Ink Notes from a user selection. 
															-->
														<MenuItem 
															Command="ann:AnnotationService.DeleteStickyNotesCommand"
														Header="Remove Notes" />
														<!-- Remove Highlights, Text Notes, Ink Notes from a 
															selection. -->
														<MenuItem 
															Command="ann:AnnotationService.DeleteAnnotationsCommand"
														Header="Remove Highlights & Notes" />
														</ContextMenu>
														</DocumentViewer.ContextMenu>

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Documents Annotations Interview Questions & FAQs

23. Documents Annotations

23.1 How can I Match Annotations with Annotated Objects ?

23.2 How can I create an application that is used to declare a Context Menu with routed commands that the users can access to create and manage annotations ?