Async disposal

AsyncDisposal.cs

using System;
using System.Threading.Tasks;

class Program
{
    static void Main() => new Program().Run().Wait();
    async Task Run()
    {
        Console.WriteLine("Before Using");
        await Async.Using(new Test(), t =>
        {
            Console.WriteLine("In Using body");
            throw new Exception("Oops");
        });
        Console.WriteLine("After Using");
    }
}

class Test : IAsyncDisposable
{
    public async Task DisposeAsync()
    {
        Console.WriteLine("Disposing...");
        await Task.Delay(1000);
        Console.WriteLine("Disposal complete");
    }
}

public interface IAsyncDisposable
{
    Task DisposeAsync();
}

public static class Async
{
    public static async Task Using<TResource>(TResource resource, Func<TResource, Task> body)
        where TResource : IAsyncDisposable
    {
        try
        {
            await body(resource);
        }
        finally
        {
            await resource.DisposeAsync();
        }
    }
}