using System;

public class Program

{

    public static void Main()

    {

        using (new DisposableDemo()) 

        { 

            Console.WriteLine("Within using");

        }

        using (DisposableDemo.StaticDisposableDemo) 

        { 

            Console.WriteLine("Within static using");

        }

    }

}

public class DisposableDemo : IDisposable 

{

    public static DisposableDemo StaticDisposableDemo = new DisposableDemo();

​

    public void Dispose()

    {

        Console.WriteLine("I am disposed");

    }

}

​