C#实现office文档转换为PDF格式

//将word文档转换成PDF格式     private bool Convert(string sourcePath, string targetPath, Word.WdExportFormat exportFormat)     {         bool result;         object paramMissing = Type.Missing;         Word.ApplicationClass wordApplication = new Word.ApplicationClass();         Word.Document wordDocument = null;         try         {             object paramSourceDocPath = sourcePath;             string paramExportFilePath = targetPath;

            Word.WdExportFormat paramExportFormat = exportFormat;             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 =                     Word.WdExportCreateBookmarks.wdExportCreateWordBookmarks;             bool paramDocStructureTags = true;             bool paramBitmapMissingFonts = true;             bool paramUseISO19005_1 = false;

            wordDocument = wordApplication.Documents.Open(                     ref paramSourceDocPath, ref paramMissing, ref paramMissing,                     ref paramMissing, ref paramMissing, ref paramMissing,                     ref paramMissing, ref paramMissing, ref paramMissing,                     ref paramMissing, ref paramMissing, ref paramMissing,                     ref paramMissing, ref paramMissing, ref paramMissing,                     ref paramMissing);

            if (wordDocument != null)                 wordDocument.ExportAsFixedFormat(paramExportFilePath,                         paramExportFormat, paramOpenAfterExport,                         paramExportOptimizeFor, paramExportRange, paramStartPage,                         paramEndPage, paramExportItem, paramIncludeDocProps,                         paramKeepIRM, paramCreateBookmarks, paramDocStructureTags,                         paramBitmapMissingFonts, paramUseISO19005_1,                         ref paramMissing);             result = true;         }         finally         {             if (wordDocument != null)             {                 wordDocument.Close(ref paramMissing, ref paramMissing, ref paramMissing);                 wordDocument = null;             }             if (wordApplication != null)             {                 wordApplication.Quit(ref paramMissing, ref paramMissing, ref paramMissing);                 wordApplication = null;             }             GC.Collect();             GC.WaitForPendingFinalizers();             GC.Collect();             GC.WaitForPendingFinalizers();         }         return result;     }

    //将excel文档转换成PDF格式     private bool Convert(string sourcePath, string targetPath, XlFixedFormatType targetType)     {         bool result;         object missing = Type.Missing;         Excel.ApplicationClass application = null;         Workbook workBook = null;         try         {             application = new Excel.ApplicationClass();             object target = targetPath;             object type = targetType;             workBook = application.Workbooks.Open(sourcePath, missing, missing, missing, missing, missing,                     missing, missing, missing, missing, missing, missing, missing, missing, missing);

            workBook.ExportAsFixedFormat(targetType, target, XlFixedFormatQuality.xlQualityStandard, true, false, missing, missing, missing, missing);             result = true;         }         catch         {             result = false;         }         finally         {             if (workBook != null)             {                 workBook.Close(true, missing, missing);                 workBook = null;             }             if (application != null)             {                 application.Quit();                 application = null;             }             GC.Collect();             GC.WaitForPendingFinalizers();             GC.Collect();             GC.WaitForPendingFinalizers();         }         return result;     }

    //将ppt文档转换成PDF格式     private bool Convert(string sourcePath, string targetPath, PpSaveAsFileType targetFileType)     {         bool result;         object missing = Type.Missing;         PowerPoint.ApplicationClass application = null;         Presentation persentation = null;         try         {             application = new PowerPoint.ApplicationClass();             persentation = application.Presentations.Open(sourcePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse);             persentation.SaveAs(targetPath, targetFileType, Microsoft.Office.Core.MsoTriState.msoTrue);

            result = true;         }         catch         {             result = false;         }         finally         {             if (persentation != null)             {                 persentation.Close();                 persentation = null;             }             if (application != null)             {                 application.Quit();                 application = null;             }             GC.Collect();             GC.WaitForPendingFinalizers();             GC.Collect();             GC.WaitForPendingFinalizers();         }         return result;     }