Modelpop up unload on when Click on any button on Panel

i have a modelpopup extender in my page.i am using this to search some data from database like customer etc. when i put search criteria on panel and as i click on serach the model popup goes and i want been able to make it visible as soon i finish the searching a code and th开发者_如何学编程en i select that code.

kindly help me out

thanks in advance.

Have you setup your cancelbutton property ??