using System;

using System.Threading.Tasks;

public class MyDisposableObject : IDisposable

{

    private bool _disposed = false;

    public void Dispose() { Dispose(true); }

    protected virtual void Dispose(bool disposing)

    {

        if (disposing && !_disposed)

        {

            _disposed = true;

            Console.WriteLine("I was disposed!");

        }

    }

    public MyDisposableObject(EventGeneratorObject ego)

    {

        ego.MyEvent += (sender, e) => Console.WriteLine("I'm still alive.");

    }

}

​

public class EventGeneratorObject

{

    public EventGeneratorObject()

    {

        Task.Run(async () =>

                 {

                     for (int i = 0; i < 5; i++)

                     {

                         await Task.Delay(500);

                         OnMyEvent();

                     }

                 });

    }

    public event EventHandler<EventArgs> MyEvent;

    private void OnMyEvent() { if (MyEvent != null) MyEvent(this, EventArgs.Empty); }

}

​

public class Program

{

    public static void Main(string[] args)

    {

        EventGeneratorObject ego = new EventGeneratorObject();

        using (MyDisposableObject mdo = new MyDisposableObject(ego))

        {

            Task.Delay(1000).Wait();

        }

        //mdo is now a zombie object...

        Console.WriteLine("Press any key to quit");

        Console.ReadKey(true);

    }

}