title: Webforms Refresh problem
body: <p>This is probably a simple question for every WebForms developer but I am knew to this scene.  I have a page that has an "ADD" button on it that results in a jquery popup where the user can submit a form that will add an entry to the repeater on the page.  My problem is that after the user adds an item, if they then hit the refresh button the item will get added again.  I can't stop this with the page.ispostback because that would block the original add.  What can I do here?</p>