Consider a asp:dropdownlist which fires SelectedIndexChangedEvent based on listitem index.....
But why the event doesn't fire for the same listitem index when selected again....
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
问题:
回答1:
Because it didn't change.
You can solve this by resetting the value after each change.
