Howdy Folks,

 I am using the AJAX Control Toolkit in a page in my web application, and it works just fine on my development PC. However, when I deploy it to the live website I get the following error

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 'ajax:AutoCompleteExtender'.

Source Error:

                      
Line 12:       </table>
Line 13:       
Line 14:       <ajax:AutoCompleteExtender
Line 15:                 runat="server" 
Line 16:                 ID="autoComplete" 


                  
               
            

I have included the most recent (framework ver 3.5) assemblies in my Bin folder and reference them in my web.config as follows:

 1    <add tagPrefix="ajax" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit"/>
  

Thanks!
 

Is the 3.5 framework installed on the server?

Jeff

 No .NET framework 3.5 is not installed on the server, but can't I still use the AjaxControlToolkit DLL? I would think I'd be looking at some System.Web.Extensions version error instead of just a "Cannot find this control". The reason I mention this is because a coworker of mine who does not have 3.5 installed on his machine was able to run this on his machine with no problem.

 Ok, the problem is occurring because I do not have 3.5 installed on the server. I went ahead and downloaded the older version of the AjaxControlToolkit library (since I do not have the ability to update the server with 3.5) and its working now.

 Problem solved. Thanks!
 

 Hi,

 I am using "AjaxControlToolkit - TabContainer" my local machine working fine, when i publish below error is coming,

Parser Error

Line 1:  <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" %>
Line 2:  
Line 3:  <%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %>

Any one face this problem, can you answer me plz. Advance in Thanks

Thanks

Ayyappan