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Q: 

Gridview onpageindexchanging not detected in multiple update Panel

Dear All,

My aspx form has many update panels with UpdateMode="Conditional". Below some of properties in my gridview : AllowPaging="true" AllowSorting="true" EmptyDataText="Data Empty" PageSize="15" onpageindexchanging="gv1_PageIndexChanging" onsorting="gv1_Sorting". I have override gv1_PageIndexChanging and gv1_Sorting in code behind(*.cs).

But When i want to change my gridview pageIndex, error message 'Message: Sys.WebForms.PageRequestManagerServerErrorException: The GridView 'gv1_attd' fired event PageIndexChanging which wasn't handled.' and gridview index can not be changed .

Please how to solve this problem

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