Edit Metadata of PDF File with C# [closed]

Answer 1

I suppose you can do it with iTextSharp.

Answer 2

Using PDF Sharp works like this:

using System;
using PdfSharp.Pdf;
using PdfSharp.Pdf.IO;

namespace ConsoleApplication1
{
  class Program
  {
    static void Main (string[] args)
    {
      Program p = new Program();
      p.Test();

    }

    public void Test ()
    {
      PdfDocument document = PdfReader.Open ("Test.pdf");

      document.Info.Author = "ME";

      document.Save ("Result");
    }
  }

}

Answer 3

For PDFSharp: If you would like to change/add the metadata on the Custom Properties of a PDF you can use the PdfDocument.Info.Elements object.

    String filename = @"d:\temp\Hugo-input.pdf";
    String outputfile = @"d:\temp\Hugo-output.pdf";
    PdfDocument document = PdfReader.Open(filename);
    document.Info.Elements.Add(new KeyValuePair<String,PdfItem>("/MyKey",new PdfString("MyValue")));
    document.Save(outputfile);

Always start a custom key with a slash!

You can find the key and value when you open this document in Adobe Acrobat Reader -> File -> Properties -> Custom.

This works with PDFSharp 1.32

Answer 4

Pimping here - my company, Atalasoft, makes .NET components for working with images. Part of the suite includes the ability to read/write PDF document metadata. It's not free, but it is run-time royalty free for desktop applications.

The code for reading is simple:

PdfDocumentMetadata metadata = PdfDocumentMetadata.FromStream(sourceStream);

to edit it and write it back to the same stream:

meta.Title = "Knicholas Knickleby";
meta.Author = "Edmund Wells";
sourceStream.Seek(0, SeekOrigin.Begin);
meta.Append(sourceStream, false); // false means don't merge - overwrite

Custom fields are supported through a hashtable.

Answer 5

Aspose.PDF or Aspose.PDF.Kit can do this for you.

Answer 6

Does the PdfDocumentInformation class from PDF Sharp fulfill your requirements.