I got a critical comment from @amazedsaint. You can read his blog http://amazedsaint.blogspot.com/

If you read my previous post http://dhananjaykumar.net/2010/10/01/findall-finding-multiple-items-in-c-list/ ,

I am using a method GreaterThanHunAs predicate to pass as parameter to FindAll()

Instead of that we can use

1. Anonymous method
2. Lambda expression

So, I am going to show you here how we could use Lambda expression

List<int>lstgrthund = lst.FindAll(a=>a>100? true:false);

So here we are just writing a lambda instead of calling a function.

Program.cs

using System;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;

namespace ConsoleApplication24
{
    classProgram
    {
        staticvoid Main(string[] args)
        {
            List<int>lst = newList<int>();
                           lst.Add(20);
                           lst.Add(300);
                           lst.Add(400);
                           lst.Add(9);
                           lst.Add(19);
                           lst.Add(789);
                           lst.Add(45);
            List<int>lstgrthund = lst.FindAll(a=>a>100? true:false);
            foreach (var r inlstgrthund)
            {
                Console.WriteLine(r);
            }
            Console.ReadKey(true);            
        }
    }
}

Output