Método AddFromFile del objeto PDFAttachments

HRESULT AddFromFile(
  BSTR             Path,
  BSTR             FileName,
  BSTR             Description,
  IPDFAttachment** Result
);

IPDFAttachment AddFromFile(
  string Path,
  string FileName,
  string Description
);

Function AddFromFile( _
  Path As String, _
  [FileName As String = "0"], _
  [Description As String = "0"] _
) As IPDFAttachment