C#写入二进制数据

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Collections;
using System.IO;
using Microsoft.Win32;
using System.Net;

namespace ConsoleApplication1
{
   class Program
    {
        static void Main(string[] args)
        {

            FileStream f = new FileStream("a.bat", FileMode.OpenOrCreate, FileAccess.ReadWrite);
            for (int i = 0; i < 10;i++ )
            {
                f.WriteByte((byte)i);
                //调用WriteByte将字节写入到文件里面
            }
            f.Close();
            Console.ReadKey();

        }
    }
}