Read file up to 1024 bytes of data in csharp

Stream stream = File.OpenRead(@"C:\data\file.xml");
int bytesToRead = 1024;
int bytesRead = 0;
byte [ ] buffer = new byte [bytesToRead];
 
// Fill up the buffer repeatedly until we reach the end of file
do {
  bytesRead = stream.Read(buffer, 0, bytesToRead);
  Console.Write(Encoding.ASCII.GetChars(buffer,0, bytesRead));
} while (bytesToRead == bytesRead);
stream.Close( );