Using 'findstr' command to get the search results

Question

Hi,

I want to use 'findstr' windows search command to search for specified text in a set of files(typically large size files) and display the entire file contents in a rich text box control  in asp.net and highlight the matching word with a different font color.

findstr just gives me the matching lines. Is there a fastest way of searching and get the full contents into rich text box control of asp.net application?

Thanks,

Santhi