Бинарные файлы и C#

using System;
using System.IO;

namespace FileOperationsSample

{
    class Program
    {
        static void Main(string[] args)
        {
            // Create the new, empty data file.

            string fileName = @"C:\Temp.data";

            if (File.Exists(fileName))
            {
                Console.WriteLine(fileName + " already exists!");
                return;
            }

            FileStream fs = new FileStream(fileName, FileMode.CreateNew);
            // Create the writer for data.
            BinaryWriter w = new BinaryWriter(fs);
            // Write data to Test.data.
            for (int i = 0; i < 11; i++)
            {
                w.Write((int)i);
            }

            w.Close();
            fs.Close();

            // Create the reader for data.
            fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            BinaryReader r = new BinaryReader(fs);

            // Read data from Test.data.
            for (int i = 0; i < 11; i++)
            {
                Console.WriteLine(r.ReadInt32());
            }
            r.Close();
            fs.Close();
        }
    }

}