using System;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        using(var resource = new Resource()){

            Console.WriteLine("Using");

            throw new Exception("Using failed");

        }

    }

}

​

public class Resource : IDisposable {

    public Resource(){

        Console.WriteLine("Resource");

        throw new Exception("Resource failed");

    }

    public void Dispose(){

        Console.WriteLine("Disposing");

        throw new Exception("Disposing failed");

    }

}