Question

In an ASP.NET application, I need to do some changes on every CSS file sent.

So I created an HttpHandler (inside the app itself), added:

<add verb="*" path="*.css" type="MyWebsite.CssTestHandler,MyWebsite"/>

to Web.config in system.web/httpHandlers and modified the handler like this:

public void ProcessRequest(HttpContext context)
{
    context.Response.Clear();
    context.Response.Write("Hello World");
    context.Response.End();
}

But CSS files are still just like they were before, so the handler is just ignored.

What I’m doing wrong?

Answer 1

Check this page for instructions on all 3 cases of IIS version (6, 7 Classic pipeline and 7 Integrated pipeline):
http://learn.iis.net/page.aspx/508/wildcard-script-mapping-and-iis-7-integrated-pipeline/

According to it, in case of Integrated pipeline, you need to add the following config parameter:

runAllManagedModulesForAllRequests="True"