using System;
using System.IO;
class Test
{
public static void Main()
{
string pathSource = @"c:\source.txt";
string pathNew = @"c:\newfile.txt";
using (FileStream fsSource = new FileStream(pathSource, FileMode.Open, FileAccess.Read))
{
byte[] bytes = new byte[fsSource.Length];
int numBytesToRead = (int)fsSource.Length;
int numBytesRead = 0;
while (numBytesToRead > 0)
{
int n = fsSource.Read(bytes, numBytesRead, numBytesToRead);
if (n == 0)
break;
numBytesRead += n;
numBytesToRead -= n;
}
numBytesToRead = bytes.Length;
using (FileStream fsNew = new FileStream(pathNew, FileMode.Create, FileAccess.Write))
{
fsNew.Write(bytes, 0, numBytesToRead);
}
}
}
}