using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        List<UrlIDUrl> urlList = new List<UrlIDUrl>();

        Dictionary<int, UrlIDUrl> urlDictioanry = new Dictionary<int, UrlIDUrl>();

        var id = 185000;

        for (int i = 1; i <= 210000; i++)

        {

            var temp = new UrlIDUrl(){UrlID = i, Url = i + "RandomText"};

            urlList.Add(temp);

            urlDictioanry.Add(i, temp);

        }

​

        Stopwatch st = new Stopwatch();

        st.Start();

        var linqresult = urlList.FirstOrDefault(x => x.UrlID == id);

        st.Stop();

        Console.WriteLine("Linq query timeelapsed : {0}", st.Elapsed);

        st.Reset();

        st.Start();

        var url = urlDictioanry[id];

        st.Stop();

        Console.WriteLine("Dictioanry query timeelapsed : {0}", st.Elapsed);

    }

​

    public class UrlIDUrl

    {

        public long UrlID

        {

            get;

            set;

        }

​

        public String Url

        {

            get;

            set;

        }

    }

}