button click does't work in usercontrol

Hi.
i created a masterpage. then i derived a page form masterpage named UserPage.aspx . i add usercontrol in UserPage.aspx. there is a save button on usercontrol.  but click event on usercontrol doesn't work. i click save button on usercontrol. mastrpage is loading, Userpage is loading. But button click o usercontrol doesn't process.
How can i solve this?
Thanks...


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