How to keep the browser history in sync when using Ajax?

Question

I\'m writing a simple photo album app using ASP.NET Ajax.
The app uses async Ajax calls to pre-load the next photo in the album, without changing the URL in the browser.

Answer 1

Many websites make use of a hidden iframe to do this, simply refresh the iframe with the new URL, which adds it to the browsing history. Then all you have to do is handle how your application reacts to those 'back button' events - you'll either need to detect the state/location of the iframe, or refresh the page using that URL.