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Editorial Team
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Asked: 2026-05-26T09:56:27+00:00

I am trying to use a filter to insert certain text into ScriptResource.axd that

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I am trying to use a filter to insert certain text into ScriptResource.axd that is generated by the ScriptManager when I put my Js into a CompositeScript element.

I find this task next to impossible.

This problem translated in Asp.Net terms means that I am trying to filter the output from a builtin handler (System.Web.Handlers.ScriptResourceHandler: without source code)..

When an handler is associated with the request the HttpModules where I could apply the filtering are not even loaded. So I tried calling the “ProcessRequest” of System.Web.Handlers.ScriptResourceHandler from an earlier event using an HttpModule (i.e. in PostRequestHandlerExecute) and then appling the filter on PostReleaseRequestState… This gives me a string with an encoding that is impossible to convert (maybe gzip is already used?).

Is what I am trying to do even possible? Can you give me any suggestions on how you would proceed?

Let me know if you need more info or source code.

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1 Answer

  1. Editorial Team

    In the end my supposition about compression was right. I managed to get the ScriptResource.axd file content by disabling it. In fact there is a configuration about this in the web.config where you can disable the compression. It is in this section:

    <system.web.extensions>
   <scripting>
      <scriptResourceHandler enableCompression="false" enableCaching="true" />
   <scripting>
<system.web.extensions>

    Now I am able to get the content in the HttpModule in PostReleaseRequestState and if I want I can now do some GZip compression after I substitute the strings. I will do some testing to see if I also need to disable the caching…

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