Microsoft JScript 运行时错误：'Sys.Extended.UI' 是 null 或者不是 object

Question

I have a problem on my page. When it opens, it displays the following error message:

Microsoft JScript runtime error: 'Sys.Extended.UI' is null or not an object

<ajax:ToolkitScriptManager ID="tsm" runat="server" CombineScripts="false" >

    </ajax:ToolkitScriptManager>

and display error

$create(Sys.Extended.UI.ModalPopupBehavior, {"BackgroundCssClass":"modalBackground1","DropShadow":true,"PopupControlID":"ctl00_ContentPlaceHolder1_panelPopupAddDefaultAddress","PopupDragHandleControlID":"ctl00_ContentPlaceHolder1_panelPopupAddDefaultAddressDragHandle","dynamicServicePath":"/SJM.Framework.Website/Order/ActiveOrders.aspx","id":"ctl00_ContentPlaceHolder1_modalPopupAddDefaultAddress"}, null, null, $get("ctl00_ContentPlaceHolder1_hiddenTargetControlForModalPopup"));

Can anyone tell me me what is the problem is. I've tried, but I haven't found it.

Answer 1

I got this error because somewhere I was using ScriptManager instead of ToolkitScriptManager. The moment i replaced Script Manager with Took kit script Manager application started working fine.

Hope this helps someone!

Answer 2

Have you tried using a newer version of the AjaxControlToolkit ? I am using ( 4.5.7.123 ) 3.5.7.123 and this problem doesn't exist.

Also, you might want to take a look at this solution:

http://forums.asp.net/p/1209962/2132128.aspx#2132128

Answer 3

I have seen this error when I was in a .NET 4.0 solution and the AjaxControlToolkit.dll file I was referencing was v4.5.xy The error went away when I tried an AjaxControlToolkit.dll file that was v4.1.vw, where I don't recall what x, y, v, and w are.

To find out what version the AjaxControlToolkit.dll file is, right click on it after adding it as a Reference, and select Properties -- there is a Property called Version that will tell you.

Answer 4

I have just resolved the "'Sys.Extended.UI' is null or not an object" problem by adding the directive:

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>

which was missing in .aspx code for some reason.

And by replacing <asp:ScriptManager ID="ScriptManager1" runat="server" />

with

<ajaxToolkit:ToolkitScriptManager runat="server" ID="ToolkitScriptManager" EnablePartialRendering="true"></ajaxToolkit:ToolkitScriptManager>

Answer 5

I've solved this by setting the LoadScriptsBeforeUI property to true like this:

<asp:ScriptManager ID="smMain" runat="server" LoadScriptsBeforeUI="true" ScriptMode="Release"></asp:ScriptManager>