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Editorial Team
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Asked: 2026-05-18T22:13:30+00:00

In my UpdatePanel, the user can page, sort and filter a gridview all using

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In my UpdatePanel, the user can page, sort and filter a gridview all using AJAX, then they select a row which causes the post to post back and a textbox to be populated with the rows ID.

Problem is, it seems I can’t register both an AsyncPostBackTrigger and a PostBackTrigger to the same control – so how would I accomplish this? Here are my triggers so far:

            <Triggers> 
                        <asp:AsyncPostBackTrigger ControlID="btnFilter" EventName="Click" /> 

                             <asp:AsyncPostBackTrigger ControlID="GridView1" EventName="PageIndexChanged" />
                   <asp:AsyncPostBackTrigger ControlID="GridView1" EventName="PageIndexChanging" />
                   <asp:AsyncPostBackTrigger ControlID="GridView1" EventName="Sorting" />
                   <asp:PostBackTrigger ControlID="GridView1"/>
                    </Triggers>
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1 Answer

  1. Editorial Team

    Maybe it is too late but I have a solution. It is no possible to register a synchronous and an asynchronous postback to the same control. What I do is to include a timer in the update panel and add a postback trigger to that timer. So, in the event you want to cause the synchronous postback enable the timer and it’ll cause the postback.

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