private static void WordToPDF(object filepath, string target)

        {

            object paramMissing = Type.Missing;

            Word.ApplicationClass wordApplication = new Word.ApplicationClass();

            Word.Document wordDocument = null;

            try

            {

                object paramSourceDocPath = target;

                string paramExportFilePath = filepath.ToString();



                Word.WdExportFormat paramExportFormat =  Microsoft.Office.Interop.Word.WdExportFormat.wdExportFormatPDF;

                bool paramOpenAfterExport = false;

                Word.WdExportOptimizeFor paramExportOptimizeFor =

                        Word.WdExportOptimizeFor.wdExportOptimizeForPrint;

                Word.WdExportRange paramExportRange = Word.WdExportRange.wdExportAllDocument;

                int paramStartPage = 0;

                int paramEndPage = 0;

                Word.WdExportItem paramExportItem = Word.WdExportItem.wdExportDocumentContent;

                bool paramIncludeDocProps = true;

                bool paramKeepIRM = true;

                Word.WdExportCreateBookmarks paramCreateBookmarks =