Reads in the file a chunck at a time then sends it to the
output stream.

Declaration Syntax
Public Sub writeFile ( _
io As Stream, _
aFilename As String _
)

Parameters
- io (Stream)
- The io stream to write the file to.
- aFilename (String)
- The name of the file to transfer.
Assembly:
Yammer (Module: Yammer) Version: 1.0.0.0 (1.0.0.0)