write a postback trigger for ur button which is in the Updatepanel.
the postback trigger is written on Updatepanel. the syntex for postback trigger is like
<
asp:UpdatePanel id="UpdatePanel1" runat="server"> <triggers>
<
asp:PostBackTrigger ControlID="Button1"></asp:PostBackTrigger>
</
triggers>
</asp:UpdatePanel>
Thanks,
Mahadeo
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