在c#中进行word、excel、ppt到pdf的转换

首先，要在从com组件中添加mircosoft的引用，Microsoft.Office.Interop.Word;Microsoft.Office.Interop.Excel;

Microsoft.Office.Interop.PowerPoint; Microsoft.Office.Core

其次，在using中引用，using Word= Microsoft.Office.Interop.Word;
using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Office.Core;

最后，是代码：

        public string ConvertWord2Pdf(string sourcePath,string targetPath)
        {
            string result = "";
            Word.WdExportFormat exportFormat = Word.WdExportFormat.wdExportFormatPDF;
            object paramMissing = Type.Missing;
            Word.Application wordApplication = new Word.Application();
            Word.Document wordDocument = null;
            try
            {
                object paramSourceDocPath = sourcePath;
                string paramExportFilePath = targetPath;
                Word.WdExportFormat paramExportFormat = exportFormat;
                Word.WdExportOptimizeFor paramExportOptimizeFor = Word.WdExportOptimizeFor.wdExportOptimizeForPrint;
                Word.WdExportRange paramExportRange = Word.WdExportRange.wdExportAllDocument;
                int paramStartPage = 0;
                int paramEndPage = 0;
                Word.WdExportItem paramExportItem = Word.WdExportItem.wdExportDocumentContent;
                Word.WdExportCreateBookmarks paramCreateBookmarks =
                    Word.WdExportCreateBookmarks.wdExportCreateWordBookmarks;

                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, false, paramExportOptimizeFor, paramExportRange, paramStartPage,
                        paramEndPage, paramExportItem, true, true, paramCreateBookmarks, true, true, false,
                        ref paramMissing);
                    result = "done!";
                }
            }
            catch (Exception e)
            {
                result = e.ToString();
            }
            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;

        }

        [WebMethod]
        public string ConvertExcel2Pdf(string sourcePath, string targetPath)
        {
            string result;
            object missing = Type.Missing;
            Excel.XlFixedFormatType targetType = Excel.XlFixedFormatType.xlTypePDF;
            Excel.Application application = null;
            Excel.Workbook workBook = null;
            try
            {
                application = new Excel.Application();
                object target = targetPath;
                workBook = application.Workbooks.Open(sourcePath, missing, missing, missing, missing, missing,
                        missing, missing, missing, missing, missing, missing, missing, missing, missing);
                workBook.ExportAsFixedFormat(targetType, target, Excel.XlFixedFormatQuality.xlQualityStandard, true, false, missing, missing, missing, missing);
                result = "done!";
            }
            catch(Exception e)
            {
                result = e.ToString();
            }
            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;
        }

引用自“https://www.cnblogs.com/studyzy/p/5338398.html”

最最后，这个要求服务器上必须安装Office，同时要注意权限，不然很容易导致在本地调试时可以转换为PDF，但是一旦部署到服务器上去就不行。另外还需要注意的是，如果Office转换pdf时发生异常，可能导致Office的进程驻留在服务器，不断驻留Office进程会导致服务器资源耗尽。