How to get list of all active HttpModules in ASP.NET?

Here is a quick tips to get the list of all active HTTPModules at runtime. We can get the list of all HttpModules from the web.config or from machine.config file. But, what we need to do if we want to get the list of all active HttpModules during runtime? Yes. We can easily get the details with the help of HttpApplication and HttpModuleCollection Class. If we quickly recall the IIS Process Request [One detailed Article], when a request reaches to worker Process from client browser, First of all Worker process is responsible to start and HttpRuntime by loading ISAPI filter. After that HttpRuntime load an HttpApplication object with the help of HttpApplicationFactory class. Each and every request should pass through the corresponding HTTPModule to reach to HTTPHandler, this list of module are configured by the HTTPApplication. Below is the code snippet by which we can get the list of active HttpModules.

        //Get Application Instance from Current Content
        HttpApplication httpApps = HttpContext.Current.ApplicationInstance;
        //Get List of modules in module collections
        HttpModuleCollection httpModuleCollections = httpApps.Modules;
        Response.Write("Total Number Active HttpModule : " + httpModuleCollections.Count.ToString() + "</br>");
        Response.Write("<b>List of Active Modules</b>" + "</br>");
        foreach (string activeModule in httpModuleCollections.AllKeys)
        {
            Response.Write(activeModule + "</br>");
        }

Below is the sample output :

This can be quite useful when we want to check if our custom created module loaded successfully or not .

Abhijit Jana

Abhijit runs the Daily .NET Tips. He started this site with a vision to have a single knowledge base of .NET tips and tricks and share post that can quickly help any developers . He is a Former Microsoft ASP.NET MVP, CodeProject MVP, Mentor, Speaker, Author, Technology Evangelist and presently working as a .NET Consultant. He blogs at http://abhijitjana.net , you can follow him @AbhijitJana . He is the author of book Kinect for Windows SDK Programming Guide.

2 Comments to “How to get list of all active HttpModules in ASP.NET?”

Comments are closed.