using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    private static string[] Values = { "z", "y", "x", "w", "v", "u", "t", "s", "r" };

​

    public static void Main()

    {

        Console.WriteLine("Without OrderBy:");

        var dictionary = CreateDictionary(Values);

        foreach (var key in dictionary.Keys)

        {

            Console.WriteLine(key);

        }

​

        Console.WriteLine("With OrderBy:");

        dictionary = CreateDictionary(Values.OrderBy(x => x));

        foreach (var key in dictionary.Keys)

        {

            Console.WriteLine(key);

        }

    }

    private static Dictionary<string, string> CreateDictionary(IEnumerable<string> values)

    {

        var dictionary = new Dictionary<string, string>(9);

        foreach (var value in values)

        {

            dictionary.Add(value, value);

        }

        return dictionary;

    }

}

​