using System;
using System.IO;
class Tester
{
public static void Main()
{
int SizeBuff = 1024;
Stream inputStream = File.OpenRead("test1.cs");
Stream outputStream = File.OpenWrite("test1.bak");
byte[] buffer = new Byte[SizeBuff];
int bytesRead;
while ((bytesRead =
inputStream.Read(buffer, 0, SizeBuff)) > 0)
{
outputStream.Write(buffer, 0, bytesRead);
}
inputStream.Close();
outputStream.Close();
}
}