Find and Highlight in Office documents and PDF

Hi all,

I'm looking for a way to allow user do a search in multiple documents of multiple types like Word, Powerpoint, Excel and PDF. Every document that contains their search will then be listed, but I also want to have all the occurence of what they serched to be highlighted in the document once they open it.

I've already found a way to do that in the Word documents using Aspose, but I haven't found anything for the other document formats: powerpoint, excel and pdf.

So if anyone knows of an existing solution for that kind of document processing let me know!

thanks in advance!

For PDF files I'd suggest you take a look at ITextSharp.
I haven't done such a thing myself, but since ITEXt let's you generate PDf documents on the fly you may read them, generate them and highlight the desired parts during rendering.

I'll a look at it thanks a lot!