using System;

using System.Collections.Generic;

using System.Linq;

​

namespace ConsoleApplication

{

    public class Program

    {

        public static void Main(string[] args)

        {

            var list = new List<int> { 1,2,3,4,5 };

​

            var query = 

                from item in list

                where item % 2 == 0

                orderby item descending

                select item;

​

            list.Add(6);

​

            foreach (var item in query)

            {

                Console.WriteLine(item);

            }

        }

    }

}

​