It's already fixed and will be in the next release.

Paulo

________________________________
From: Vahid Nasiri [mailto:vahid_nas...@yahoo.com]
Sent: Friday, November 25, 2011 2:30 PM
To: itext-questions@lists.sourceforge.net
Subject: [iText-questions] iTextSharp default FilterHandlers

Hello,
In FilterHandlers class we have

static FilterHandlers() {
            Dictionary<PdfName, IFilterHandler> map = new Dictionary<PdfName, 
IFilterHandler>();

            map[PdfName.FLATEDECODE] = new Filter_FLATEDECODE();
            map[PdfName.FL] = new Filter_FLATEDECODE();
            map[PdfName.ASCIIHEXDECODE] = new Filter_ASCIIHEXDECODE();
            map[PdfName.AHX] = new Filter_ASCIIHEXDECODE();
            map[PdfName.ASCII85DECODE] = new Filter_ASCII85DECODE();
            map[PdfName.A85] = new Filter_ASCII85DECODE();
            map[PdfName.LZWDECODE] = new Filter_LZWDECODE();
            map[PdfName.CCITTFAXDECODE] = new Filter_CCITTFAXDECODE();
            map[PdfName.CRYPT] = new Filter_DoNothing();
            map[PdfName.RUNLENGTHDECODE] = new Filter_RUNLENGTHDECODE();

            defaults = new Dictionary<PdfName, IFilterHandler>();
        }

As you can see, "map" is not used at all and "defaults" is empty.
Probably defaults = map should be defined here. Right?

To test that, render a PDF form with stamper.FormFlattening = true and then try 
to read it. It won't work without the above modification.
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