using System;

using System.Collections.Generic;

using System.Linq;

​

class Person

{

    public string Name {get; set;}

}

​

public class Program

{

    private static void ApplyRandomNames(IEnumerable<Person> persons)

    {

        foreach (var person in persons)

        {

            person.Name = Guid.NewGuid().ToString("n");

        }

    }

    public static void Main()

    {

        var randomPersons = Enumerable.Range(1, 10).Select(i => new Person());

        ApplyRandomNames(randomPersons);

        foreach (var person in randomPersons)

        {

            Console.WriteLine("Person name: {0}.", person.Name);            

        }

    }

}