C# Word文檔轉PDF的實現

        private string adobePdfPrint = "Adobe PDF";
        private string adobeDisPrint = "Acrobat Distiller";
        private string regRoot = "SOFTWARE//Adobe//Acrobat Distiller//";
        private string printerFileName = "acrodist.exe";
        private string regName = "InstallPath";

        /// <summary>
        /// 擷取acrodist.exe的安裝路徑
        /// </summary>
        /// <returns></returns>
        private string GetAdobeDisFilePath()
        {
            RegistryKey regKey = null;
            RegistryKey acrodistKey = null;
            string printerName = string.Empty;
            int i;
            string regRootVersion = string.Empty;

            regKey = Registry.LocalMachine;
            // acrodist的4-8版本適用
            for (i = 4; i < 9; i++)
            {
                regRootVersion = string.Format("{0}{1}.0", regRoot, i);
                acrodistKey = regKey.OpenSubKey(regRootVersion);

                if (acrodistKey != null)
                {
                    printerName = acrodistKey.GetValue(regName, "") + "//" + printerFileName;
                    if (File.Exists(printerName))
                    {
                        return printerName;
                    }
                }
            }
            throw new Exception("Acrobat Distiller printer not found!");
        }

        /// <summary>
        /// 擷取Adobe Printer
        /// "Adobe PDF" 或 "Acrobat Distiller"
        /// </summary>
        /// <returns></returns>
        private string GetAdobePrinter()
        {
            foreach (string printername in PrinterSettings.InstalledPrinters)
            {
                if (printername.ToUpper().IndexOf(adobePdfPrint.ToUpper()) != -1 || printername.ToUpper().IndexOf(adobeDisPrint.ToUpper()) != -1)
                {
                    return printername;                   
                }
            }
            return string.Empty;
        }

        public void ConvertWord2Pdf(string sourceFile)
        {
            if (PrinterSettings.InstalledPrinters.Count == 0)
                throw new Exception("Did not find the printer, please install the printer.");

            if (!File.Exists(sourceFile))
                throw new Exception(string.Format("File not found:{0}", sourceFile));

 

            string strDir = Path.GetDirectoryName(sourceFile);

            string strName = Path.GetFileNameWithoutExtension(sourceFile);

            string prnFile = string.Format("{0}//{1}.prn",strDir,strName);
            string pdfFile =  string.Format("{0}//{1}.pdf",strDir,strName);
            object objPrnFile = (object)prnFile;
            object background = true;
            object printToFile = true;
            object collate = true;
            object append = false;
            object manualDuplexPrint = false;
            object copies = false;
            object range = Word.WdPrintOutRange.wdPrintAllDocument;
            object missing = System.Reflection.Missing.Value;
            string msg = string.Empty;
           

            string adobePrinter = GetAdobePrinter();

            if (adobePrinter.Length == 0)
                throw new Exception("Did not find Adobe PDF printer or Acrobat Distiller printer, please install the printer.");           
            
            IWord word = new Word2003Factory().CreateWord();
            // 開啟Word文檔
            Word.Document doc = word.OpenDocument(sourceFile);
            string oldPrint = doc.Application.ActivePrinter;
            // 將Adobe Printer設定為預設印表機
            doc.Application.ActivePrinter = adobePrinter;
            DateTime start = DateTime.Now;
            DateTime end = start.AddSeconds(20);
            // Word文檔列印到Prn檔案
            doc.PrintOut(ref background, ref append, ref range, ref objPrnFile, ref missing, ref missing,
                ref missing, ref missing,ref missing, ref printToFile, ref collate, ref missing, ref missing,
                ref missing, ref missing, ref missing, ref missing, ref missing);
          
          
            while (!File.Exists(prnFile))
            {
                if (DateTime.Now > end)
                {
                    throw new Exception("Word document print to prn document overtime");                   
                }
                else
                {
                    Application.DoEvents();
                }               
            }

            doc.Application.ActivePrinter = oldPrint;
            word.Close(false);           
            doc = null;
            word = null;

            // Prn裝PDF
            Process objProcess = new Process();
            objProcess.StartInfo.CreateNoWindow = true;
            objProcess.StartInfo.UseShellExecute = false;
            objProcess.StartInfo.FileName = GetAdobeDisFilePath();
            objProcess.StartInfo.Arguments = prnFile;

            start = DateTime.Now;
            end = start.AddSeconds(20);
            objProcess.Start();

            while (!File.Exists(pdfFile))
            {
                if (DateTime.Now > end)
                {
                    throw new Exception("Word document print to prn document overtime");
                }
                else
                {
                    Application.DoEvents();
                }               
            }

            objProcess.CloseMainWindow();

            //if (File.Exists(prnFile))
            //{
            //    File.Delete(prnFile);
            //}

            /*
            ACRODISTXLib.PdfDistiller pdfDis = new ACRODISTXLib.PdfDistiller();

            pdfDis.FileToPDF(prnFile, pdfFile, string.Empty);
            start = DateTime.Now;
            end = start.AddSeconds(20);
            while(!File.Exists(pdfFile))
            {
                if (DateTime.Now > end)
                {
                    throw new Exception("prn document print to pdf document overtime");
                }
                else
                {
                    Application.DoEvents();
                }
            }                       
            pdfDis = null;          
             */
        }