Odd issue with DropDownList


Well-known member
Jul 18, 2006
Programming Experience
Ok, has anyone encountered this one (and hopefully resolved it)

My web app has an updatepanel that auto-refreshes via a timer every 10 seconds - in itself that's fine and it works well, however for some reason in Firefox, a dynamically populated DropDownList on the page (outside the auto-refreshing updatepanel) gets it's selectedIndexChanged event fired when the dropdown is open and the updatepanel refreshes.

In Chrome and (sadly) IE this doesn't happen.

I've fudged a partial fix by checking whether the timer is the control causing the postback and jumping out of the event, but I'd prefer to get to the bottom of the problem.
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