how to disable NumericUpDownExtender after first click?

Question

I'm using NumericUpDownExtender inside updatepanel which is inside repeater displays comments on article. I use NumericUpDownExtender as thumbs up/down and I need to disable it after first click so that no one can rate the comment more than once. How can I do that? Thanks in advance for your help!

Answer 1

The NumericUpDownExtender has three controls that need to be disabled, referenced by TargetControlID, TargetButtonDownID and TargetButtonUpID. If you disable these three controls on the first callback, this should do it.