How to inject a reference to a specific IHostedService implementation?

Question

My web app has a background service that listens to a service bus. Based on the docs, it looks like the built-in way to run a background service is to implement IHoste

Answer 1

None of the complexity in the other answers is needed as of .net core 3.1. If you don't need to get a concrete reference to your class from another class, simply call:

services.AddHostedService();

If you must have a concrete reference, do the following:

services.AddSingleton();