using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var elements = new List<string>(new[] { "A", "B", "C" });

        Console.WriteLine("C#'s &&");

        elements.Where(x => {

            if (x == "A")

            {

                Console.WriteLine("ConditionA is true");

                if (1 == 1)

                {

                    Console.WriteLine("ConditionB is true");

                    return true;

                }

                Console.WriteLine("ConditionB is false");

            }

            Console.WriteLine("ConditionA is false");

            return false;           

        }).ToList();

        Console.WriteLine();

        Console.WriteLine("Double Linq.Where");

        elements.Where(x => {

            if (x == "A")

            {

                Console.WriteLine("ConditionA is true");

                return true;

            }

            Console.WriteLine("ConditionA is false");

            return false;           

        })

            .Where(x => {

                if (1 == 1)

                {

                    Console.WriteLine("ConditionB is true");

                    return true;

                }

                Console.WriteLine("ConditionB is false");

                return false;

            }).ToList();

    }

}