Assuming you have a fancy dotnet core application that runs on its own or as IIS website, but now you want to run it as a Windows service.
You can do it pretty easy even without modifying the application it self, like adding a service host or some other junk. For that download the Non-Sucking Service Manager, this tool allows you to start almost any application as a Windows service.
Publish your app somewhere outside of any user home, like C:\MyFancyApp, in most cases following command is enough.
dotnet publish MyFancyApp.csproj -c Release -o C:\MyFancyApp
Create a file run.bat that starts your application with all required parameters, config, environment variables or what ever it needs. Something like this.
dotnet MyFancyApp.dll
Then create a second bat file service.bat that runs nssm commands. This script will install a Windows service with a description and start it automatically.
nssm install MyFancyApp %cd%\run.bat
nssm set MyFancyApp Description "Runs a fancy dotnet core app on http://localhost:5000"
nssm start MyFancyApp
BUTZ! Now you have a Windows service running without any sucking!
PS: You can run almost anything as a Windows service using the nssm tool, not only a dotnet core projects like described in this blog post.