HostingEnvironment does not contain a definition for IsHosted

Question

I'm developing a C# application and I need to find out if I'm under IIS or not. I've seen some question on SO about using the HostingEnvironment.IsHosted method. Unfortunately if I write something like:

if (HostingEnvironment.IsHosted)
{
    // on IIS
}
else
{
   // not on IIS
}

I get a compile error:

HostingEnvironment does not contain a definition for IsHosted

I'm using: Microsoft.AspNetCore.Hosting; Microsoft.AspNetCore.Hosting.Internal;

EDIT

Tried using System.Web.Hosting.HostingEnvironment.IsHosted as suggested but it didn't work

You are mixing framework versions. System.Web is no longer used in asp.net-core — Nkosi, Aug 16 '17 at 13:53
Check the docs https://learn.microsoft.com/en-us/aspnet/core/fundamentals/hosting?tabs=aspnetcore1x — Nkosi, Aug 16 '17 at 13:56
I already had a look at it but nothing seems to explain how to do it — Gianluca Ghettini, Aug 16 '17 at 13:58
I don't think that is how it works. You are the one starting up the service so you are the one determining whether it is using IIS or not. — Nkosi, Aug 16 '17 at 14:10

score 4 · Accepted Answer · answered Aug 16 '17 at 14:11

4

This might help. You could fetch the IHostingEnvironment like this:

var hostingEnvironment =(IHostingEnvironment)options.ApplicationServices.GetService(typeof(IHostingEnvironment))

if(hostingEnvironment.IsProduction())
{
    // do work
}

The environment is set in your launchSettings.json. Under your launch profiles:

"IIS Express": {
  "commandName": "IISExpress",
  "launchBrowser": true,
  "launchUrl": "/api/values",
  "environmentVariables": {
    "ASPNETCORE_ENVIRONMENT": "Development"
  }
},

Default value is "Production" when deployed.

EDIT: I'm actually missing a portion. You would be required to envelope code in .UseKestrel(options => { /* environment code */ })

answered Aug 16 '17 at 14:11

Brandon

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thanks but I don't quite follow you.. what does it mean to envelope the code in x? – Gianluca Ghettini Aug 16 '17 at 14:15
place `var hostingEnvironment = ....` that I posted inside of your `new WebHostBuilder().UseKestrel(options => { /*place here*/ });` – Brandon Aug 16 '17 at 14:17
then you can use your if block from your question – Brandon Aug 16 '17 at 14:18

marsze · Answer 2 · 2017-08-16T13:20:33.473

0

What you mean is System.Web.Hosting.HostingEnvironment.IsHosted

https://msdn.microsoft.com/en-us/library/system.web.hosting.hostingenvironment.ishosted(v=vs.110).aspx

Not sure what's the ASP.NET Core equivalent.

edited Aug 16 '17 at 13:20

answered Aug 16 '17 at 13:14

marsze

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1

tried System.Web.Hosting.HostingEnvironment.IsHosted but "Hosting" does not exist.. see my edit – Gianluca Ghettini Aug 16 '17 at 13:49

HostingEnvironment does not contain a definition for IsHosted

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