Read PDF files from collection

readpdfcollection.cs

// Using Lib iTextSharp: http://sourceforge.net/projects/itextsharp/

PdfReader reader = new PdfReader("Portifolio.pdf"); // Seu arquivo collection
for (int x = 0; x < reader.XrefSize; x++) // Loop em todos os objetos
{
     PdfObject obj = reader.GetPdfObject(x);
     if ((obj != null) && (obj.IsDictionary()) && (obj.ToString().EndsWith("/Filespec")))
     {
          PdfDictionary filespec = (PdfDictionary)obj;
          PdfDictionary refs = filespec.GetAsDict(PdfName.EF);
          foreach (KeyValuePairkey in refs)
          {
               // Salvando sub arquivos
               FileStream fos = new FileStream(x + ".pdf", FileMode.CreateNew, FileAccess.Write);
               PRStream stream = (PRStream)reader.GetPdfObject(refs.GetAsIndirectObject(key.Key).Number);
               byte[] pdfb = PdfReader.GetStreamBytes(stream);
               fos.Write(pdfb, 0, pdfb.Length);
               fos.Flush();
               fos.Close();
          }
     }
}
reader.Close();