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

public void Export( 
   IDocumentExportEx filter,
   System.IO.Stream stream,
   System.string pageRange
)

Parameters

filter

the filter that will export the currently loaded report.

stream

The System.IO.Stream to which to save the exported result.

pageRange

A range of page numbers to export separated by a comma. Between each comma can have a single page number, or range of pages with a hyphen between the starting and ending page numbers in the range.

Reference