Edit pdf bookmark urls using C#

Question

I have a pdf file which has bookmarks to different chapters(each chapter is linked to another pdf file in seperate folder using bookmarks). clicking on each chaptername will open a new pdf in the same parent pdf file.

I need to retrieve the bookmark urls of parent pdf file and alter the URLs.I used below code to retrieve bookmark properties(Action,File,Title etc), however didn't succeed in altering the path as it is dictionary key value pair.

 IList<Dictionary<String, Object>> bmProperties= SimpleBookmark.GetBookmark(new PdfReader(new RandomAccessFileOrArray("http://XXXX/Shared%20Documents/Chapters.pdf"),
null));

        foreach (IDictionary<String, Object> bmProperty in bmProperties)
        {

            foreach (var fileProperty in bmProperty.Keys)
            {
                if (fileProperty == "File")
                {
                  // need the edit the value of Key-"File". Will it be possible to alter the value using pdfwriter
                 }
             }

I've updated your tags to reflect. Please remember to include all tags that are relavent to your question (as tags and **not** in the title). — M.Babcock, Dec 30 '11 at 04:38
Are these actual Pdf Bookmarks? Do they show up in the Bookmarks panel in Acrobat? Or are they just hyperlinks on a page? If the latter then see this post http://stackoverflow.com/a/8141831/231316 — Chris Haas, Jan 04 '12 at 14:49

kuujinbo · Answer 1 · 2011-12-31T00:59:41.527

You can accomplish this in two steps.

Get the bookmarks from the parent PDF like in your code snippet above. Iterate over the IList and make any needed changes.
Open the parent PDF again a second time with a PdfReader. Then overwrite the existing bookmarks with what you updated in step 1:

PdfReader reader = new PdfReader(PARENT-PDF-FILE);
using (PdfStamper stamper = new PdfStamper(reader, YOUR-STREAM)) {
  stamper.Outlines = bmProperties;
}

Note that in step 1 you must take into account that some of the bmProperty (IDictionary from your code above) values may themselves be Dictionary<String, Object> objects, if your bookmarks have nested levels.

score 0 · Answer 2 · edited May 23 '17 at 12:27

0

i don't have much confidence about itextsharp about your requirement.. but there is another library PDFSharp that has some good bookmark functionality...

PDFsharp bookmarks in text

http://www.pdfsharp.net/wiki/Bookmarks-sample.ashx

Regards.

edited May 23 '17 at 12:27

Community

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answered Dec 30 '11 at 05:55

Shoaib Shaikh

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Edit pdf bookmark urls using C#

2 Answers2