using System;

using System.Linq;

using System.Collections.Generic;  

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        List<People> peopleList = new List<People>() { 

                new People(){ age=18, name="Bill",family="Gates"},

                new People(){ age=28, name="Steve",family="GUARD" },

                new People(){ age=35, name="Ram",family= "New"},

                new People(){ age=19, name="Moin",family="Old"}

            };

        var  result = from p in  peopleList where p.age < 25 select p.name;

    }

}

public class People{

​

    public string name {get; set;}

    public string family {get; set;}

    public int age {get; set;}

}