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Editorial Team
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Asked: 2026-05-18T21:29:40+00:00

I have a .NET infra code running both within the IIS worker process and

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I have a .NET infra code running both within the IIS worker process and within a desktop client app. How can the .NET code determine whether it is running within an IIS worker process?

I know that I could check the name of the process (w3wp.exe, for instance), but I would like a more robust approach.

Thanks.

EDIT1

I wish to make a side note. This is not a production need. I need this information to enable certain scenarios useful during the development and testing phase. Specifically to ease the testing of secure vs non secure configurations.

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1 Answer

  1. Editorial Team

    You can use properties of the HttpRuntime class which will be null if the current hosting environment is not ASP.Net, e.g.:

    bool isHttpRuntime = (HttpRuntime.AppDomainAppId != null)

    This approach is more robust than using ‘HttpContext.Current != null’ as this will give false negatives under ASP.Net environments where the current thread is not a request thread e.g. it’s a ThreadPool thread used directly or indirectly as a result of using Task Parallel Library for instance.

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