Join inner - method syntax

CSharp · Console

/Program.cs

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);
		}
        
	}
}