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PDF Viewer Navigation Pane

  • 4 minutes to read

The Navigation pane displays thumbnails, bookmarks, attachments, and several other tabs. Click the corresponding tab in the pane to open or close the built-in panel.

NavigationPane

#Built-in Panels

#Page Thumbnails

The Page Thumbnails panel displays page thumbnails.

PageThumbnails

Press Alt+T to show the Page Thumbnails panel.

You can use the zoom slider or Ctrl+Mouse Wheel shortcut to enlarge/reduce thumbnails.

ThumbnailsZoomSlider

The Options drop-down list shows thumbnail settings. This list can also be accessed from the panel’s context menu.

ThumbnailsOptions

Option Description Command
Print Page(s) Invokes the Print dialog to print pages that correspond to the selected thumbnails. If the panel contains no selected thumbnails, all pages are printed. PdfThumbnailsPrintPagesCommand
Enlarge Page Thumbnails Increases page thumbnail size. PdfEnlargePageThumbnailsCommand
Reduce Page Thumbnails Decreases page thumbnail size. PdfReducePageThumbnailsCommand

#Bookmarks

This panel displays bookmarks from the PDF file.

BookmarksPanel

Press Alt+B to show the Bookmarks panel.

The Options drop-down list shows bookmark settings.

RuntimeBookmarkOptions

The table below describes bookmark settings and lists API used to specify corresponding options in code.

Option Description API
Expand Current Bookmarks Expands the selected bookmark. PdfOutlinesExpandCurrentCommand
Collapse/Expand Top-Level Bookmarks Expands or collapses all bookmarks. PdfOutlinesExpandCollapseTopLevelCommand
Hide After Use Specifies whether to hide the panel after an outline was clicked. PdfOutlineViewerSettings.HideAfterUse
Text Size Gets or sets the size of bookmark nodes. PdfOutlineViewerSettings.TextSize
Wrap Long Bookmarks Specifies whether to wrap long bookmark names. PdfOutlineViewerSettings.UseOutlinesForeColor

#Attachments

This panel displays the list of file attachments in the current PDF file.

Attachment

Press Alt+A to show the Attachments panel.

When you open an attachment, the Security Warning message appears:

AttachmentWarning

Handle the PdfViewer.FileAttachmentOpening event to hide the message box.

#Comments

The Comments panel displays annotations and comments.

Comments

Press Alt+C to show the Comments panel.

You can sort and filter comments by page, author, date, type, check, and review status.

Click an annotation to add a reply to it. Double-click the annotation to edit its contents.

Edit and Reply

Right-click the annotation and select Set Status to specify the review status. Select None to remove the status.

Click the checkbox at the comment’s top right corner to flag the comment with a check mark. Check marks are for your personal use, for example, to mark the comment as reviewed. They do not specify whether to print or export the selected comment(s).

#Signatures

The Signatures panel displays signature information and signature validity:

Signatures dialog

Press Alt+S to show the Signatures panel.

When you open a document, the Document Viewer verifies signatures and displays their status in the Signatures panel:

  • The check mark icon indicates that the signature is valid.
  • The caution triangle icon indicates that signature validity is unknown because the signer’s certificate isn’t on your list of trusted identities.
  • The cross icon indicates that the signature is invalid. The document has been altered or corrupted since the signature was applied.

You can also view information about such signature properties as the location of the signature in the document, the signatories that sign the document, the reason that the signature was created, the date and time the document was signed and modified after it was signed, and other information.

Right-click the title line of the signature and select the Show Signature Properties option to invoke the corresponding dialog and see detailed information about signature properties:

Signature properties

You can also click Certificate details… to open the Certificate dialog:

Certificate details

In the dialog, you can view certificate details, install the certificate to include it in your list of trusted identities, or export the certificate to your trusted or revocation list.

Certificate dialog

#Layers

The Layers panel displays all layers contained in a document. To display a layer, click on its check box. Visible layers are marked with the eye icon.

Layers visibility

Press Alt+L to show the Layers panel.

If a layer has no check box or displays a lock icon, you cannot change its visibility:

Locked layers

Click the Reset to Initial Visibility command to reset layer settings and return to the initial document state.

Reset layers visibility to initial state

#Customization

The PDF Viewer ships with the following API used to customize the navigation pane:

Action Properties Events
Change pane visibility PdfViewer.NavigationPaneVisibility
PdfViewer.NavigationPaneInitialVisibility
PdfViewer.NavigationPaneVisibilityChanged
Display only specific panels PdfViewer.NavigationPanePageVisibility
Change active page PdfViewer.NavigationPaneInitialSelectedPage
PdfViewer.NavigationPaneSelectedPage
PdfViewer.NavigationPaneSelectedPageChanged
Specify pane width PdfViewer.NavigationPaneWidth
PdfViewer.NavigationPaneMinWidth
See Also