- How to downscale all images in a PDF
- How to generate and export certificates
- How to downscale all images in a PDF
- Add Stamp to PDF
- How to reduce PDF file size
- How do I create graphics with Icc based colors
- Highlight fields in PDF
- Add a note to PDF
- Resize PDF pages
- Verify a custom digital PDF signature
- Extract glyph boxes from PDF
- Use TrueType font collections
- Layout text with MultilineTextShape
- Merge PDF files in C# .NET
- How do I extract page destinations from bookmarks?
- Clip PDF page content in C#
- Fill PDF form
- Extract glyphs and sort by reading order
- Add bookmarks to PDF
- How to scale content of PDF
- Create rectangles with rounded corners
- Create text with decorations
- Create layers in PDF and draw on each layer
- TIFF to PDF C#
- Crop content on a PDF page
- How to embed files in a PDF document
- Remove graphics from PDF
- Change the color inside a PDF
- Import FDF into PDF
- Flatten PDF form
- Digitally sign a PDF form in C# or VB.NET
- Vector graphics in PDF
- Translate PDF page content
- Extract graphics from PDF
- Determine the content bounding box
- Search text in PDF
- Convert PDF to plain text
- Flatten Markup Annotation
- Add text field to PDF
- Extract embedded files from PDF
- Extract images from PDF
- Add a Diagonal Watermark to PDF in C#
- Fit image to PDF page
- Add simple html text to PDF
- Add multiline text to a PDF document
- Add single-line text to PDF
- Create a new digitally signed PDF document
- PDF Viewer Preferences
- Change page orientation PDF
- Split PDF pages in C# and VB.NET
- Append two or more existing PDF files
- Determine if a PDF only contains images
- Add footer to PDF
- Convert SVG to PDF
- Fill in a PDF form using MVC
- Add hyperlink to PDF
- Rotate a PDF page
- Change the formatting of a numeric field
- How to mirror PDF pages and other shapes
- Fill in a template PDF document
- How to add autosized text to PDF
- Create formfields in PDF documents
- Export FDF from PDF form
- Add a link with an internal destination to PDF
- Remove PDF security settings
- Add a link to PDF with an external destination
- How to sign and verify updates to a PDF document
- Embed TrueType font
- How to create a tiling for shapes in PDF
- EMF to PDF as vector image
- EMF to PDF as raster image
- Replace field with image
- Add a rubber stamp annotation with a custom icon
- Create a text annotation in PDF with rich text
- Read and write meta data from PDF
- Create a custom signature handler to sign and verify PDF documents
- Download and convert image to PDF
- Add barcodes to PDF
- Use multiple licenses
- Disable submit button after submitting
How do I extract page destinations from bookmarks?
This article explains how one can determine which page a particular bookmark refers to.
If one considers the PDFKit.NET Bookmark class, there appears to be no obvious place where it holds page destinations. The reason for this is simply that a PDF Bookmark is not just a true bookmark. Instead, it is an entity that can have various actions associated with it when clicked on. This can be an action that jumps to a particular page, but also an action that executes some javascript code for example. A Bookmark can have a sequence of such actions associated with it, and these will all be executed in order when someone clicks on it.
This means that one will need to inspect the actions in order to determine whether a Bookmark actually jumps to a page, and if so, which one.
Another complicating factor is that there can be multiple ways to perform such a jump. The code below takes into account internal destinations and named destinations. These are the most common cases. It is also possible to jump to a particular page via a javascript action. This is highly unusual though, – and rather complex to detect – so we ignore that possibility below.
private void listBookmarks(BookmarkCollection collection)
{
foreach (Bookmark bookmark in collection)
{
System.Diagnostics.Trace.WriteLine("bookmark: " + bookmark.Title);
foreach (Action action in bookmark.Actions)
{
GoToAction gotoAction = action as GoToAction;
if (gotoAction != null)
{
// Arbitrary actions can be attached to a bookmark, but for references inside
// a document this is normally a GoToAction with either an InternalDestination
// or a NamedDestination. The positions of an internal destination may only
// be partially defined. In that case, the Top, Left, Bottom, and
// Right values may contain NaN values (Not-A-Number).
//
// Please note that it is also possible to attach javascript to a bookmark and
// that this may execute code that goes to a particular page. This is quite
// unusual though.
InternalDestination internalDestination = gotoAction.Destination as InternalDestination;
if (internalDestination == null)
{
NamedDestination namedDestination = gotoAction.Destination as NamedDestination;
if (namedDestination != null)
{
internalDestination = document.NamedDestinations[namedDestination.Name];
}
}
if (internalDestination != null)
{
Console.WriteLine(
string.Format("internal -> page {0}, position ({1},{2})",
internalDestination.Page.Index, internalDestination.Left, internalDestination.Top));
}
}
}
// list sub-bookmarks.
listBookmarks(bookmark.Bookmarks);
}
}
Please also note that an internal destination may have undefined values (NaN) for its destination rectangle. Some destinations will have no valid rectangle at all, and will just refer to some page index.

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