using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var dict = new Dictionary<int, string>()

        {{0, "0"}, {1, "1"}, {2, "2"}, {3, "3"}, {4, "4"}, {5, "5"}, {6, "6"}, {7, "7"}, {8, "8"}, {9, "9"}, {10, "10"}, };

        foreach (var kvp in dict)

        {

            Console.WriteLine(object.ReferenceEquals(kvp.Key.ToString(), kvp.Value));

        }

    }

}