Gravar um Byte Array para Ficheiro

Dim byteData() As Byte
...
' Create a file and write the byte data to a file.
Dim oFileStream As System.IO.FileStream
oFileStream = New System.IO.FileStream("bytes.dat", System.IO.FileMode.Create)
oFileStream.Write(byteData, 0, byteData.Length - 1)
oFileStream.Close()