using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        List<int> list = new List<int>() { 1, 2, 3, 4, 5 };

        List<int> all = list.FindAll( 

            i => { Console.Write(i); return i < 3; } 

        );

​

​

​

    }

}