using System;

using Microsoft.Extensions.DependencyInjection;

​

var services = new ServiceCollection();

​

services.AddSingleton<IMyService, MyService>();

​

using (var provider = services.BuildServiceProvider())

{

    provider.GetRequiredService<IMyService>();

}

​

public interface IMyService : IDisposable { }

​

public class MyService : IMyService

{

    public void Dispose() => Console.WriteLine("Disposing..."); // never called

}