驻留在ASP.NET 4 IIS网站中的ASP.NET Core Web API

Question

I am tasked to to build a Web API application. The app will be hosted inside an existing web site - a pre-ASP.NET 5 web application with a WCF web service.

I wonder - can I build the web-api application using ASP.NET Core 1 in a way that it can happily exists as a sub application inside the already existing site in IIS?

Thanks!

Answer 1

If I understand you correctly it is not possible what you want. Please refer to the following documentation about hosting ASP.NET Core on IIS: https://docs.asp.net/en/latest/publishing/iis.html .

If you specifically look at the .NET CLR version in the application pool it should be "No Managed Code" while your current website is set to a .NET framework version I assume. This is because ASP.NET Core is now cross plaform and completely web server agnostic. It even needs a little 'trick' (the ASP.NET Core Module) to work on IIS. See: "The module creates the reverse-proxy between IIS and the Kestrel server."

But if you follow the link provided above I think you'll manage to work it out.

Answer 2

Yes, this is possible, I'm doing the opposite of this scenario but conceptually its the same thing. You need to create your subsite as a separate application in IIS with its own app pool. That app pool needs to be configured No Managed Code per the instructions on the Docs site https://docs.asp.net/en/latest/publishing/iis.html

The only other thing you need to watch out for is that the web.config in the subsite will inherit some settings from the root web.config, so you need to remove or clear things sometimes like handlers, modules, etc.