I'm working on a project where I have to create a page that displays the "health" of a system.  I run a query and display the results in a gridview with a red or green icon next to it.  This works fine when the page is first loaded.  My problem is that I have a thread that runs a query every 30 minutes and rebinds the gridview but the gridview never refreshes even though the data has changed.  How do I get the gridview to display the new results?  The databound event never fires a second time even though I can clearly see that I have received new data.  I assume I am missing something simple but I just don't know what.  What am I doing wrong?

Thanks,

Tom