using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var people = new[]

        {

            new { Name = "Vernon", Gender = "Male", CountryCode = "GB" },

            new { Name = "Carrie", Gender = "Female", CountryCode = "CA" },

            new { Name = "Joanna", Gender = "Female", CountryCode = "US" },

            new { Name = "Thomas", Gender = "Male", CountryCode = "ES" }

        };

        var countries = new[]

        {

            new {CountryName = "United Kingdom", Code = "GB"},

            new {CountryName = "United States", Code = "US"},

            new {CountryName = "Canada", Code = "CA"},

            new {CountryName = "France", Code = "FR"},

            new {CountryName = "Spain", Code = "ES"}

        };

        var results = people.Join(countries,

                                  arg => arg.CountryCode, // the key to join from the people list

                                  arg => arg.Code,        // the key to join from the country list

                                  (person, country) => new { person.Name, country.CountryName }); // the select of the join

​

        foreach (var x in results)

        {

            Console.WriteLine("{0} {1}", x.Name, x.CountryName);

        }

    }

}