I have an ASP.NET intranet search application which stores the result of the frequently searched words in the cache(memcached). When the user searches for a word that is available in the cache the application displays it from the cache instantly in a gridview and on the background it should search on the intranet pages if any new match is found on the new pages, if found, it should update the gridview automatically without post back.
How can I perform the search operation on the background and update the gridview automatically. I have the search logic with me. Performing the operation in the background and updating the gridview automatically is the challenge. Can anyone suggest on this.