using System;

class Res : IDisposable
{
	public Res(){
        Console.WriteLine("Lock resource");
    }
	public void Dispose(){
        Console.WriteLine("Release resource");
    }
	public bool P{
        private get{return true;}
        set{throw new Exception("hi there!");}
    }
}

public class Test
{
	public static void Main()
	{
		using (var res = new Res(){P=true})
		{
		    //do something
		}
	}
}