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Q: 

button and drop down controls events firing every alternate times

I am having a drop down list and a button in user control. the button click event is registered dynamically. This event I registered is firing every alternating time. dont know the reason why it is behaving so. later added the selected index changed to the drop down list control. this also is getting fired alternate times. the user control is invoked in a sharepoint web part.

any pointers are greatly appreciated..

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