DropDownList's SelectedIndexChanged event not firing

Question

I have a DropDownList object in my web page. When I click on it and select a different value, nothing happens, even though I have a function wired up to the SelectedIn

Answer 1

I know its bit older post, but still i would like to add up something to the answers above.

There might be some situation where in, the "value" of more than one items in the dropdown list is duplicated/same. So, make sure that you have no repeated values in the list items to trigger this "onselectedindexchanged" event