BitArray简单例子

using System;
using System.Collections;
using System.Text;

namespace TestConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            var bits = new BitArray(4);
            bits.SetAll(true);

            Console.WriteLine(bits.ToInt());
             Console.WriteLine(bits.ToStr());

            Console.ReadKey();
        }

    }

    public static class BitArryExtention
    {
        /// <summary>
        /// 将BitArray转为整数
        /// </summary>
        /// <param name="bitArray"></param>
        /// <returns></returns>
        public static int ToInt(this BitArray bitArray)
        {
            int j = 0;
            for (int i = 0; i < bitArray.Count; i++)
            {
                j += (bitArray[i] ? 1 : 0)  << i;
            }
            return j;
        }
        public static string ToStr(this BitArray bitArray)
        {
            StringBuilder j = new StringBuilder();
            foreach (bool bit in bitArray)
            {
                j.Append(bit ? 1 : 0);
            }
            return j.ToString();
        }
    }

}