The Script Manager enableHistory attribute

Overview
Geeks with blogs have produced a lovely blog that'll show you how to set up your page's script manager to allow your back and forward browser buttons to trigger an event.

It runs through how to enable it using the enableHistory attribute on the script manager and how to wire up the event so that when you use the back buttons it'll fire.

Something that's worth pointing out though, is that you MUST add a history point during a postback event before leaving the page, or your event won't be fired. This may seem obvious, but I didn't realise!

So you'll definitely need a line like this in a postback event:

ScriptManager1.AddHistoryPoint("Key", "Value");

Without that happening at least once before leaving the page, your navigate event won't fire.