using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        List<Thing> things =

            new List<Thing> { new Thing("red"), new Thing("white"), new Thing("blue"), new Thing("scarlet"),

                            new Thing("smoke"), new Thing("periwinkle") };

​

        IEnumerable<Thing> query = things.Where(thing => thing.EyeColor.Length < 6).ToList();

​

        Console.WriteLine("The 'Where'd' List of Things:");

        foreach (var thing in query)

        {

            Console.WriteLine(thing);

        }

        Console.WriteLine("\n");

        var firstThing = query.First();

        firstThing.EyeColor = firstThing.EyeColor + "$";

        Console.WriteLine("All the Things from the Original List After Updating the First Thing from the 'Where'd' List:");

        foreach (var thing in things)

        {

            Console.WriteLine(thing);

        }

    }

    private class Thing

    {

        public Thing(string color)

        {

            EyeColor = color;

        }

        public string EyeColor {get; set;}

        public override string ToString()

        {

            return EyeColor;

        }

    }

}