Public Overloads Sub Export( _
   ByVal document As PageDocument, _
   ByVal stream As System.IO.Stream, _
   ByVal pageRange As System.String _
) 

public void Export( 
   PageDocument document,
   System.IO.Stream stream,
   System.string pageRange
)

Parameters

document

ActiveReports PageDocument to be exported.

stream

Stream that saves the PDF document.

pageRange

A range of page numbers. Ranges are indicated by the use of a hyphen between the starting and ending page numbers in the range. Single pages may also be included. Each range or single page is separated by a comma.

Reference