An example of LINQ at work

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;

namespace linqexample
{
    public class Thing
    {
        private static int NextInt = 1;
        
        private int _id;

        public int Id 
        { 
            get
            {
                Console.WriteLine("Accessing id.");
                return _id;
            }
            set => _id = Id;
        }
        
        public String Stuff { get; set; }

        public Thing()
        {
            Id = NextInt;
            NextInt++;
            Stuff = Guid.NewGuid().ToString();
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var things = new List<Thing>();
            var count = 100000;
            while (count-- > 0)
            {
                things.Add(new Thing());
            }
            Console.WriteLine("Let's ask for 99...");
            var thing = things.Where(x => MyMethod(x)).First();
            Console.WriteLine($"Found it! Stuff={thing.Stuff}");
            Console.ReadLine();
        }

        private static bool MyMethod(Thing t)
        {
            return t.Id == 99;
        }
    }
}