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Dear Fellows i have a usercontrol which takes destination details from users with multiple dropdownlist controls... e.g. Country Dropdownlist produces postback and populate states dropdownlist based on select values. State's Dropdownlist produces postback to get cities based on states.Furthermore everything happens in an Ajax UpdatePanel. --Select--

I'm using this control in popupextender to be displayed. Each time dropdownlist postback popupcontrol disappears. Please help me with that

<asp:Panel ID="pnlhotelsearch" runat="server">

            <div>

            </div>
            <uc1:SlimMainsearchpanel ID="SlimMainsearchpanel1" runat="server" />


        </asp:Panel>
        <ajaxToolkit:PopupControlExtender ID="PopupControlExtender1" TargetControlID="lnkbtnCriteriea" PopupControlID="pnlhotelsearch" runat="server">
        </ajaxToolkit:PopupControlExtender>
Faraz Shahid
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1 Answers1

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There are several suggestions at ASP.net Modal Pop up extender and DropDownlist autopostback.

The way I solved it was to raise a new event, say DropDownChangedEvent, in the AutoPostBack event handler. The handler for the new DropDownChangedEvent calls PopupExtender.Show.

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