PDF based project

[AussieLew]

I have a project coming up (unpaid) indexing newsletters for a Gardening group I am a member of. The newsletters are in PDF format. As I dabble in c# I thought I may be able to automate the process somewhat. There appears to be a lot of c# pdf stuff out there to generate and manipulate .pdf docs. Based on your experience I'm hoping to shorten the process of finding the right solution. My initial needs are fairly simple.... 1) Open an unprotected pdf document. 2) Browse the document. 2) Double click (or select somehow) different selected words. (this should then highlight every instance of each selected word throughout the document as a visual cue it has been selected already) 3) Generate an index showing A) the selected word and B) the page number(s) I have a lot of documents to process and they will continue to be ongoing so any help would be great.