Binaryreader and binarywriter binary file copy

// Create two filestream objects
Filestream fsof = new filestream (originfile, filemode. Open, fileaccess. Read );
Filestream fsnf = new filestream (newfile, filemode. Create, fileaccess. Write );

// Create a read/write class
Binaryreader BR = new binaryreader (fsof );
Binarywriter BW = new binarywriter (fsnf );

// Point the Read File stream pointer to the stream Header
BR. basestream. Seek (0, seekorigin. Begin );
// Point the written file stream pointer to the end of the stream
Bw. basestream. Seek (0, seekorigin. End );
 
While (Br. basestream. Position <br. basestream. length)
{
// Read a byte from the BR stream and write it to the BW stream immediately
Bw. Write (Br. readbyte ());
}
 
BR. Close ();
Bw. Close ();