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I have a page that that contains a User Control and a submit Button. The User Control contains a Drop Down List.
I want to make the Button on the page visible if the user selects an item in the User Control’s Drop Down List.
How can I make the page recognise the Drop Down List OnSelectedIndexChanged event?
Add own
eventto your UserControl and subscribe on it in page’s code-behind. InSelectedIndexChangedevent handler fire your event if somebody subscribe on it. Detailse explanation with code you may find here: Easily Raise Events From ASP.NET ASCX User Controls