about update panel and asp:panel

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I have nested update panels and in the outer UpdatePanel there is an asp:panel control. When I generate an event from inner UpdatePanel,asp:panel is displayed twice.

This is my structure of UpdatePanels:

<asp:UpdatePanel>
    <asp:UpdatePanel>
    </asp:UpdatePanel>
       <i have triggered event here >
   <asp:panel> </ asp:panel>
</asp:UpdatePanel>

Why is this panel displayed twice?

Posted 11-Aug-10 22:21pm

Maddy_1008

Updated 12-Aug-10 6:34am

E.F. Nijboer

v2

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E.F. Nijboer 12-Aug-10 12:37pm

Put code between pre tags. Use complete sentences and don't be lazy, so just write UpdatePanel if you mean UpdatePanel instead of your own abbreviations like updtpnl.

2 solutions

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E.F. Nijboer · Answer 1 · 2010-08-12T06:32:00

Solution 1

Try give them a name if they don't already do and set the UpdateMode to conditional. like this:

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">

Good luck!

Posted 12-Aug-10 6:32am

E.F. Nijboer

David Kimaru · Answer 2 · 2011-05-27T02:23:00

The reason why it is displayed twice is that there are actually 2 update panels in your code. Have a look at your code here below:

<asp:UpdatePanel> 
             <asp:UpdatePanel>

              <second update="" panel="" starts="" here="">

             </asp:UpdatePanel>
        
             <i have triggered event here >
             
             <asp:panel> 

            </ asp:panel>
 </asp:UpdatePanel></second>

you need to do a code like the one below:

<asp:UpdatePanel>
        <asp:panel xmlns:asp="#unknown"> 
             <i have triggered event here >
             
       </ asp:panel>
 </asp:UpdatePanel>

I hope this one helps.
Best Regards