再探文件套表 - Word套表與轉存PDF

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.IO;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using Microsoft.Office.Interop.Word;

namespace WordToPdfService

{

    public class PdfConverter : IDisposable

    {

        private Application wordApp = null;

        public PdfConverter()

        {

            wordApp = new Application();

            wordApp.Visible = false;

        }

        public byte[] GetPdf(string templateFile, Dictionary<string, string> fields)

        {

            object filePath = templateFile;

            //檔案先寫入系統暫存目錄

            object outFile =

                Path.Combine(Path.GetTempPath(), Guid.NewGuid() + ".pdf");

            Document doc = null;

            try

            {

                object readOnly = true;

                doc = wordApp.Documents.Open(FileName: ref filePath, ReadOnly: ref readOnly);

                doc.Activate();

                Stopwatch sw = new Stopwatch();

                sw.Start();

                //REF: http://bit.ly/Z9G5zg

                Range tmpRange = doc.Content;

                tmpRange.Find.Replacement.Highlight = 0; //去除醒目提示(Highlight)

                tmpRange.Find.Wrap = WdFindWrap.wdFindContinue;

                object replaceAll = WdReplace.wdReplaceAll;

                foreach (string key in fields.Keys)

                {

                    tmpRange.Find.Text = "[$$" + key + "$$]";

                    tmpRange.Find.Replacement.Text = fields[key];

                    tmpRange.Find.Execute(Replace: ref replaceAll);

                }

                sw.Stop();

                Debug.WriteLine("Replaced in {0:N0}ms", sw.ElapsedMilliseconds);

                //釋放Range COM+                

                Marshal.FinalReleaseComObject(tmpRange);

                tmpRange = null;

                //存成PDF檔案

                object fileFormat = WdSaveFormat.wdFormatPDF;

                doc.SaveAs2(FileName: ref outFile, FileFormat: ref fileFormat);

                //關閉Word檔

                object dontSave = WdSaveOptions.wdDoNotSaveChanges;

                ((_Document)doc).Close(ref dontSave);

            }

            finally

            {

                //確保Document COM+釋放

                if (doc != null) 

                    Marshal.FinalReleaseComObject(doc);

                doc = null;

            }

            //讀取PDF檔，並將暫存檔刪除

            byte[] buff = File.ReadAllBytes(outFile.ToString());

            File.Delete(outFile.ToString());

            return buff;

        }

        public void Dispose()

        {

            //確實關閉Word Application

            try

            {

                object dontSave = WdSaveOptions.wdDoNotSaveChanges;

                ((_Application)wordApp).Quit(ref dontSave);

            }

            finally

            {

                Marshal.FinalReleaseComObject(wordApp);

            }

        }

    }

}

            Dictionary<string, string> fields = new Dictionary<string, string>();

            fields.Add("Seq", "32767");

            fields.Add("LetterDate", DateTime.Today.ToString("yyyy年M月d日"));

            fields.Add("Name", "黑暗執行緒");

            fields.Add("Date", new DateTime(2012,12,21).ToString("yyyy年M月d日"));

            fields.Add("Amount", int.MaxValue.ToString("N0"));

            fields.Add("TelNo", "0800092000");

            fields.Add("AgentName", "林志玲");

            fields.Add("AgentTitle", "副理");

            //使用using確保Word資源被釋放

            using (var cvtr = new PdfConverter())

            {

                var buff =

                    cvtr.GetPdf(Path.Combine(

                        System.AppDomain.CurrentDomain.BaseDirectory,

                        "templates\\notice.docx"), fields);

                File.WriteAllBytes("d:\\Temp\\" + Guid.NewGuid() + ".pdf", buff);

            }

            Console.WriteLine("Done");

            Console.ReadLine();