[VB.NET] Extract Pages and Split Pdf Files Using iTextSharp

[stanav]

Hey Stanav,

Which method in your class, if any, can be used to extract bookmark info from a pdf?

thanks
Brian

You can use the SimpleBookmark class to extract all the bookmarks in a pdf and export it to an XML file if you want to. Here's how you do it

 Public Shared Function ExportBookmarksToXML(ByVal sourcePdf As String, ByVal outputXML As String) As Boolean
        Dim result as Boolean = False
        Try
            Dim reader As New iTextSharp.text.pdf.PdfReader(sourcePdf)
            Dim bookmarks As System.Collections.Generic.List(Of System.Collections.Generic.Dictionary(Of String, Object)) = SimpleBookmark.GetBookmark(reader)
            Using outFile As New IO.StreamWriter(outputXML)
                SimpleBookmark.ExportToXML(bookmarks, outFile, "ISO8859-1", True)
            End Using
            reader.Close()
            result = True
        Catch ex As Exception
            Throw New ApplicationException(ex.Message, ex)
        End Try
        Return result
    End Function

I'm also working on a method to merge pdf files with all bookmarks preserved. However, it works only with bookmarks that use the page number as the destination. Bookmarks that use named destination get broken after merged (that is you still see all the bookmarks but it doesn't work (go to a destination) when clicked on). That's why I'm not posting the solution yet.