using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var people = new List<Person>() {

            new Person() { Name= "Pedro", LastName="Garcia" },

            new Person() { Name= "Yadiel", LastName="Artiles" },

            new Person() { Name= "Yanet", LastName="Garcia" }               

        };

​

        var peopleSelected = people.Where(p => p.LastName == "Garcia").ToList();

        foreach (var p in peopleSelected) {

            Console.WriteLine("Nombre: {0}", p.Name);

        }

    }

}

​

public class Person

{

    public string Name { get; set; }

    public string LastName { get; set; }

}

​