using System;

using System.Threading.Tasks;

​

using var disposable = new Disposable();

Console.WriteLine("Before delay");

await Task.Delay(1000);

Console.WriteLine("After first delay");

await Task.Delay(1000);

Console.WriteLine("After second delay");

​

class Disposable : IDisposable

{

    public void Dispose() => Console.WriteLine("Disposed");

}