>Here's some code I'm using in production. There is an imports statement and iTextsharp.dll is included as a reference
>This goes through every PDF form in a folder and returns a report of all the fields found. ( not their contents, the field names)
>
>I think this is the only line that uses iTextsharp in this routine
>
> pdffields = GetPDFFormFields(pdffile)
>
>
>I have a version I'll be happy to post that produces a complete report of distinct field names found in all the PDFs in order to determine what datapoints need to be available.
>
>If you google itextsharp c# tutorial you should find lots of information on how to use iTextsharp to extract whatever you need from pdfs or to create pdfs on the fly or fill pdfs fields.
>
>There is also something called antlr I am using and I am now researching to see what I use it for and if it would help in what you're doing . I'll get back to you on that.
>
>Are you primarily interested in reading data from PDF forms that others have filled in or are you going to be filling out pdf forms from data ( I do mostly the latter )

I am reading only. And, we have no idea about the field names. So, I need to get all the field names in a collection. Then, by deduction, we will be able to see what field we need to use. We have 10 sample PDF files. So, when I will extract the related value, I will be able to see if the proper field name was used.