iTextSharp IOException "Trailer not found"

Question

am using iTextSharp ( .NET 2.0 Vista ). The iTextSharp Version is 4.1.2.0

PdfReader reader = new PdfReader(pdfFile); 

is causing the library to thrown an exception saying "Trailer not found"
The file exists and can be viewed in Adobe no problem Any ideas?

Answer 1

The trailer is a part the structure of a PDF file. If you're getting an error saying it can't be found then the first thing I'd think is your file is corrupt. Being able to open the PDF in a PDF viewer program doesn't necessarily mean the PDF isn't corrupt; I understand that if it's a linearized PDF file the viewer won't attempt to use the trailer.

Does your code throw an IOException for any PDF you attempt to read?

• If so, then maybe using a more recent version of iTextSharp will help or at least post some code.
• If not, then I'd work on recreating the PDFs you're trying to process.

Answer 2

Can anyone suggest how to handle this type of files in code or what is the solution because we can view files but can not process through iTextSharp. We are merging different pdf files and if any of these file comes then it doesn't work. We can not ignore any file. please reply.