using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        IList<int> intList = new List<int>() { 7, 10, 21, 30, 45, 50, 87 };

        IList<string> strList = new List<string>() { null, "Two", "Three", "Four", "Five" };

        Console.WriteLine("1st Element which is greater than 250 in intList: {0}", intList.First( i => i > 250));

        //The following will throw an exception

        //Console.WriteLine("1st Even Element in intList: {0}", strList.FirstOrDefault(s => s.Contains("T")));

​

    }

}