Hi all,
I have a requirement to generate pdf files and be able to compare the files
afterwards. For example, I would first generate Version1.pdf and later on
generate Version2.pdf which could have some extra data. I know I could easily
compare the raw data so I was wondering if there is a way to embed the raw data
to the pdf files in a way that it's hidden and users cannot view the raw data
but my Pdf compare program would be able to extract the raw data from the pdf
files and compare the two. Example below:
File 1 Raw Data Pipe Delimited
First Name|Last Name|Address <--Want to embed this raw data text file
hidden in Version1.pdf
A|B|C
D|E|F
G|H|I
File 2 Raw Data Pipe Delimited
First Name|Last Name|Address <--Want to embed this raw data text file
hidden in Version2.pdf
A|B|C
D|E|F
G|H|I
J|K|L
My Pdf Compare Program would then extract these two text files from the PDFs
and determine that File 2 has an extra record "J|K|L". I'm just looking for
some direction on the best approach to do this. I did some searching and found
some information on PdfFileSpecification.fileEmbedded but wasn't sure if this
is the right method to be using since it seems this would leave the raw data
text file visible to someone when they open the PDF files.
Thanks in advance,
Dave
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