I was able to solve my problem by saving the flowdocument content to .DOCX and converting it to PDF by using Microsoft.Office.Interop.Word
using moiw = Microsoft.Office.Interop.Word;
public static void WordToPDF(string docFileName)
{
// Create a new Microsoft Word application object
moiw.Application word = new moiw.Application();
// C# doesn't have optional arguments so we'll need a dummy value
object oMissing = Missing.Value;
// Get a Word file
FileInfo wordFile = new FileInfo(docFileName);
word.Visible = false;
word.ScreenUpdating = false;
// Cast as Object for word Open method
Object filename = (Object)wordFile.FullName;
// Use the dummy value as a placeholder for optional arguments
moiw.Document doc = word.Documents.Open(ref filename, ref oMissing,
ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing,
ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing,
ref oMissing, ref oMissing, ref oMissing, ref oMissing);
doc.Activate();
object outputFileName = wordFile.FullName.Replace(".docx", ".pdf");
object fileFormat = moiw.WdSaveFormat.wdFormatPDF;
// Save document into PDF Format
doc.SaveAs(ref outputFileName,
ref fileFormat, ref oMissing, ref oMissing,
ref oMissing, ref oMissing, ref oMissing, ref oMissing,
ref oMissing, ref oMissing, ref oMissing, ref oMissing,
ref oMissing, ref oMissing, ref oMissing, ref oMissing);
// Close the Word document, but leave the Word application open.
// doc has to be cast to type _Document so that it will find the
// correct Close method.
object saveChanges = moiw.WdSaveOptions.wdDoNotSaveChanges;
((moiw._Document)doc).Close(ref saveChanges, ref oMissing, ref oMissing);
doc = null;
// word has to be cast to type _Application so that it will find
// the correct Quit method.
((moiw._Application)word).Quit(ref oMissing, ref oMissing, ref oMissing);
word = null;
}
I was able to solve my problem by saving the flowdocument content to .DOCX and converting it to PDF by using Microsoft.Office.Interop.Word