How can a .NET code know whether it is running within a web server application?

Question

I have a library code, which should be aware whether it is executed in the context of a web server or standalone application server.

The obvious that comes to mind i

Answer 1

Trying to solve another problem, I found a good solution for this one. There is a private method System.Configuration.SettingsPropertyValue.IsHostedInAspnet, which does exactly what I need. Being a private method, I do not want to call it (though I could using reflection), but its implementation is trivial:

private bool IsHostedInAspnet()
{
    return (AppDomain.CurrentDomain.GetData(".appDomain") != null);
}

(according to Reflector)

Looks like there is a special key in the app domain data - ".appDomain", which is set when running in ASP.NET web server.

I will stick to that.