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Q: 

How to work with PDF Portfolio in iTextSharp? How to identify that a PDF is Portfolio

Hi there,

I have an application that signs PDF files. It works fine and I use iTextSharp for it. But I don't know how to do it when the PDF file is a PDF portfolio. My application just signs the first document of the PDF portfolio, and a want to sign every document in this PDF portfolio.

How can I work with PDF portfolios in iTextSharp? Or how can I identify if a PDF file have multiple files bounded on it?

Thanks,

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