using System;

using System.Collections;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var ba = new BitArray(new[] { true, false, true, false, false });

        var numOnes = (from bool m in ba

           where m

           select m).Count();

        var x = ba

                .Cast<bool>()

                .Count() == 5;

        var array = var array = new BitArray(new int[] { (int)8});

        var y = array

                .Cast<bool>()

                .Count() == 1;

        Console.WriteLine(DateTime.Now.ToString("o") + Environment.NewLine + 

                          numOnes + Environment.NewLine + 

                          x + Environment.NewLine +

                          y );

    }

}