Execute javascript from inside update panel on every refresh

Question

I have an aspx page which is made of 3 user controls (ascx). I have an update panel wrapping the 3 user controls like this:

<asp:UpdatePanel ID="UpdatePanelWrapper" runat="server">
    <ContentTemplate>
         <uc1:UserControl1 ID="UserControl1" runat="server" />        
         <uc2:UserControl2 ID="UserControl2" runat="server"/>
         <uc2:UserControl3 ID="UserControl3" runat="server"/>
    </ContentTemplate>
</asp:UpdatePanel>

I show each user control by separate, so when "UserControl1" is displayed, the other 2 user controls are hidden.

Inside "UserControl1" I have some asp controls and some javascript functions. My problem is that these javascript functions are never called when "UpdatePanelWrapper" is refreshed.

I have tried this solution http://blog.dreamlabsolutions.com/post/2009/02/24/jQuery-document-ready-and-ASP-NET-Ajax-asynchronous-postback.aspx, by adding that javascript call inside the "UserControl1", though it's not working. I made it work only if I add that javascript call in the aspx page, but not inside the "UserControl1".

Any help would be appreciated, Thank you.

Answer 1

here is how can you do this....

 <script type="text/javascript">

        Sys.Application.add_init(appl_init);

        function appl_init() {
            var pgRegMgr = Sys.WebForms.PageRequestManager.getInstance();
            pgRegMgr.add_endRequest(EndHandler);
        }

        function EndHandler() {
        // This will be called whenever your updatepanel update 
        // It will be trigger after the update updatepanel
        //add your javascript here
        }                                                          
    </script>