Hi All,

I have to maintain a web application that uses the Ajax Control Toolkit. When I compare the web.config file of this application with the recommanded configuration for applications which use the Ajax control toolkit, I notice that the following HttpModule is missing :

<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>

But my application works fine !!! My questions are :

What's the purpose of this HttpModule ?

Is it really required ? What problem can my application encounter if I don't add this declaration ?

Hi daddybl2002,

The <httpModules> Element

The <httpModules> element defines HTTP modules used in ASP.NET AJAX.

The following example shows the <httpModules> element for ASP.NET AJAX. Add this section to the existing Web.config file as a child of the <system.web> element.

<system.web>

  <httpModules>

    <add/>

  </httpModules>

</system.web>

Please refer to this document about the ScriptModule and how to configure ASP.NET AJAX:
http://www.asp.net/AJAX/documentation/live/ConfiguringASPNETAJAX.aspx

Best regards,

Zhi-Qiang Ni

Hi,

Thank you for your reply, but I know what's an HttpModule and I Know what's the purpose of the HttpModules tag.

I want to know what does the ScriptModule precisely. when i look to  http://www.asp.net/AJAX/documentation/live/ConfiguringASPNETAJAX.aspx, they indicate : "The <httpModules> element defines HTTP modules used in ASP.NET AJAX." Great by used for what exactly ? And What risk I take if I dont put it ? ther is my questions

Best regards,

Hi daddybl2002,

I cannot find out the detailed description of the ScriptModule’s usage whether in the MSDN or documentation.
http://msdn.microsoft.com/en-us/library/system.web.handlers.scriptmodule.aspx
http://www.asp.net/AJAX/documentation/live/ConfiguringASPNETAJAX.aspx#httpModules

However, we can use the reflector to view the properties and methods of ScriptModule class.
http://www.red-gate.com/products/reflector/

For example, this is the Init method:
protected virtual void Init(HttpApplication context)
{
    context.PreSendRequestHeaders += new EventHandler(this.PreSendRequestHeadersHandler);
    context.PostAcquireRequestState += new EventHandler(this.OnPostAcquireRequestState);
    context.AuthenticateRequest += new EventHandler(this.AuthenticateRequestHandler);
    context.EndRequest += new EventHandler(this.EndRequestHandler);
}
It handles four events. Now, we can assume that the ScriptModule provides functions about PreSendRequestHeaders, PostAcquireRequestState, AuthenticateRequest and EndRequest event.

Best regards,

Zhi-Qiang Ni

http://www.15seconds.com/issue/020417.htm 

http://www.15seconds.com/issue/020417.htm 

http://support.microsoft.com/kb/307985

@Mohammed askar: I have already write this : "I know what's an HttpModule and I Know what's the purpose of the HttpModules tag"

So you are completely out..... sorry

You can't answer someone withount reading his request and understanding his need.