在C#操作word或者Excel，我們可能會用到微軟內置的COM組件，會出現很多問題。
如：在本地調試導出Excel沒有問題，發布到IIS就有問題了，檢測到的異常：
我們會發現在iis上運行的程序，沒有打開word的進程。
因為你vs是管理員權限，而iis沒有權限。
所以這要提高iis的權限。
啟動IIS，應用程序池-“選定的應用程序池”-高級設置-進程模擬-標識：
選擇自定義帳戶然后單擊設置以打開設置憑據對話框，輸入管理員的用戶名和密碼。
輸入管理員的賬號和密碼
在%windir%/System32/config/systemprofile下，建立Desktop文件夾。
一切IIS對COM組件的操作 均需要設置標識為 隸屬於administrator組的用戶.
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記錄：
//Word轉換成pdf /// <summary> /// 把Word文件轉換成為PDF格式文件 /// </summary> /// <param name="sourcePath">源文件路徑</param> /// <param name="targetPath">目標文件路徑</param> /// <returns>true=轉換成功</returns> private bool DOCConvertToPDF(string sourcePath, string targetPath) { bool result = false; Microsoft.Office.Interop.Word.WdExportFormat exportFormat = Microsoft.Office.Interop.Word.WdExportFormat.wdExportFormatPDF; object paramMissing = Type.Missing; Microsoft.Office.Interop.Word.ApplicationClass wordApplication = new Microsoft.Office.Interop.Word.ApplicationClass(); Microsoft.Office.Interop.Word.Document wordDocument = null; try { object paramSourceDocPath = sourcePath; string paramExportFilePath = targetPath; Microsoft.Office.Interop.Word.WdExportFormat paramExportFormat = exportFormat; bool paramOpenAfterExport = false; Microsoft.Office.Interop.Word.WdExportOptimizeFor paramExportOptimizeFor = Microsoft.Office.Interop.Word.WdExportOptimizeFor.wdExportOptimizeForPrint; Microsoft.Office.Interop.Word.WdExportRange paramExportRange = Microsoft.Office.Interop.Word.WdExportRange.wdExportAllDocument; int paramStartPage = 0; int paramEndPage = 0; Microsoft.Office.Interop.Word.WdExportItem paramExportItem = Microsoft.Office.Interop.Word.WdExportItem.wdExportDocumentContent; bool paramIncludeDocProps = true; bool paramKeepIRM = true; Microsoft.Office.Interop.Word.WdExportCreateBookmarks paramCreateBookmarks = Microsoft.Office.Interop.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; } catch { result = false; } 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; } /// <summary> /// 把Excel文件轉換成PDF格式文件 /// </summary> /// <param name="sourcePath">源文件路徑</param> /// <param name="targetPath">目標文件路徑</param> /// <returns>true=轉換成功</returns> private bool XLSConvertToPDF(string sourcePath, string targetPath) { bool result = false; Microsoft.Office.Interop.Excel.XlFixedFormatType targetType = Microsoft.Office.Interop.Excel.XlFixedFormatType.xlTypePDF; object missing = Type.Missing; Microsoft.Office.Interop.Excel.ApplicationClass application = null; Microsoft.Office.Interop.Excel.Workbook workBook = null; try { application = new Microsoft.Office.Interop.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, Microsoft.Office.Interop.Excel.XlFixedFormatQuality.xlQualityMinimum, 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; } /// <summary> /// 把PowerPoing文件轉換成PDF格式文件 /// </summary> /// <param name="sourcePath">源文件路徑</param> /// <param name="targetPath">目標文件路徑</param> /// <returns>true=轉換成功</returns> //private bool PPTConvertToPDF(string sourcePath, string targetPath) // { // bool result; // PowerPoint.PpSaveAsFileType targetFileType = PowerPoint.PpSaveAsFileType.ppSaveAsPDF; // object missing = Type.Missing; // PowerPoint.ApplicationClass application = null; // PowerPoint.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; // }