Escape Key Behaviour

Hey,

One of my users just discovered the following:

If you hit ESC twice when on a page containing an update panel with a control inside, if you click on anything else that does a postback, you'll get aSystem.ArgumentException: Invalid postback or callback argument. Event validation is enabled using [...] error.

I would like to know more about the default behaviour of the ESC key. And might be interested in hooking up to the event to fire something else when that happens.

Note: I am still using the July CTP (haven't had time / fond it necessary to upgrade yet, so maybe this issue no longer exists now).

Thanks,

Jason

Okay just upgraded to 1.0 RTM and I'm no longer gettingpostback or callback argument exceptions. However, if I do it during a postback, I do see that my updateprogress stays open. In my old one, it didn't seem to have any effect.

Are there any references to the escape key behaviour?

Jason