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
{publicclass PdfConverter : IDisposable
{private Application wordApp = null;
public PdfConverter()
{ wordApp = new Application();
wordApp.Visible = false;
}
publicbyte[] 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;
}
publicvoid Dispose()
{//確實關閉Word Application
try
{object dontSave = WdSaveOptions.wdDoNotSaveChanges;
((_Application)wordApp).Quit(ref dontSave);
}
finally
{ Marshal.FinalReleaseComObject(wordApp);
}
}
}
}
