Sys.WebForms.PageRequestManager._initialize does not appear on my ASP.Net page

Question

The code below does not appear on my ASP.NET page, and when I click the button, my page returns.

Sys dot WebForms dot PageRequestManager dot _initialize ('ScriptManager1', document dot getElementById ('form1')); Sys dot WebForms dot PageRequestManager dot getInstance () dot _updateControls (['tUpdatePanel1'], [], [], 90);

although I see the code below at the bottom of the page

Sys dot Application dot initialize ();

I have a screenwriter and an update panel on the page. Update panels contain a label and a button in the contenttemplate section. When a button is pressed, text should appear on the label.

I am using Visual Studio 2005 and I have installed the ASP.NET AJAX extensions. I refer to System.Web.Extensions and System.Web in my project, and I use WebApplication.

I also copied the entries below in the configuration file

                          

         

               

       

   

Please help Thanks

Answer 1

removed the tag xhtmlConformance mode = "Legacy" from my web.config ...

msdn.microsoft.com/en-us/library/bb386454.aspx
weblogs.asp.net/scottgu/archive/2006/12/10/gotcha-don-t-use-xhtmlconformance-mode-legacy-with-asp-net -ajax.aspx

Answer 2

I have a similar problem. Solve it using Real problem: I used tdXXXXX = de ('_ ctl0_CPB_XXXXX');

where de is the function function de (clID)

    {
        return document.getElementById(clID);  
    }       

_ctl0_CPB_XXXXX, 0, .. _ctl00_CPB_XXXXX. javaScripts. .