Problem getting Ajax to work on Pages using MasterPage File

I have a situation that I am in desperate need of help with. I am trying to get Ajax working on our server machine so we can test forms that have ajax controls embedded. I have had to move the Ajax extensions dll to the bin folder since I suspect my Server is not Ajax enabled. On a Standalone page, I can successfully use Ajax on the server, but when I try to use Ajax by dropping the scriptmanager on the masterpage and then using an UpdatePanel control on a child page contained in the content section I get the following error message ....


Server Error in '/' Application.

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Unknown server tag 'asp:UpdatePanel'.

Source Error:

Line 4:  
Line 5:  <asp:Content ID="Content1" ContentPlaceHolderID="Content" runat="Server">
Line 6:      <asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
Line 7:          <contenttemplate>
Line 8:             <asp:Label ID="lblError" runat="server"></asp:Label><br />

Source File: /CommonTools/TimeOffManagement.aspx    Line: 6

Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42


Anyone know what else I need to do to get this working with no errors? Thanks in Advance

.Net Web/Software Engineer
2/7/2008 5:16:13 PM 9760 articles. 0 followers. Follow

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On your standalone page, do you have a <%@ Register %> declaration?  Sounds like you've got that instead of it in the web.config, but your master page is missing it.

Encosia - ASP.NET, AJAX, and more.

Latest article: Using complex types to make calling services less… complex
2/7/2008 10:28:53 PM

check <configSections> Element in web.config

Configuring web.config as below

Chetan Sarode
Software Engineer,
Approva Systems Pvt Ltd,
Pune, India.
2/8/2008 3:24:58 AM

This is weird.

 I made sure to configure the web.config well. In my masterpage, I have the following.....

 <%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
    Namespace="System.Web.UI" TagPrefix="asp" %>

 Given that these files are contained in the bin folder in my application as we speak. It worked for a while and just crashed for some reason or another. Any suggestions?? The very same thing I have on my server worked a while ago, until I uploaded a newer version and it broke. This works with no probs on my local machine though, only that I have the web.extension installed on my machine but on the server, I had to move the dll to the bin directory since I suspect it is not ajax enabled.

.Net Web/Software Engineer
2/8/2008 4:47:14 PM

The AJAX Extensions have to be loaded on the server.  You can include the Control Toolkit in the bin directory, but copying the extensions dll there does nothing for you.

When you ask a question, remember to click "mark as answered" when you get a reply which answers your question.

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2/8/2008 7:11:29 PM


The AJAX Extensions have to be loaded on the server.  You can include the Control Toolkit in the bin directory, but copying the extensions dll there does nothing for you.


But here is my situation. I have a standalone page on the same server that works with no problems of any kind.  Using the same dlls. I have an update panel there, an accordion and they all work perfectly well. But when I try to use a masterpage and then have my content page hold the updatepanel. the problem begins. My updatepanel is not seen. How do I fix this??

.Net Web/Software Engineer
2/8/2008 9:09:34 PM

Hi Dollarjukie,

have a standalone page on the same server that works with no problems of any kind.  Using the same dlls. I have an update panel there, an accordion and they all work perfectly well.

It is really weird. Based on my experience, if your standalone page is a part of the Website, the master page should work.  However, please double check your web.config by following this documentation.   Also, please make sure that your .NET Framework matches the AJAX Control Toolkit.  As we know, AJAX Control Toolkit is divided into two versions, one for .NET Framework3.5 and another for .NET Framework 2.0.  

If it doesn't work, please feel free to let me know with more information including your system environments and a tiny sample.

Best regards,


Jonathan Shen
Microsoft Online Community Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
2/13/2008 3:39:44 AM

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