注：我是在wps试用期专业版，windows10系统 vs2019 webform（.net framework4.5）测试。
前提：需要下载安装wps专业版、企业版。
项目中需要引用wps的com组件
com组件Upgrade WPS Spreadsheets 3.0 Object Library (Beta) ，对应“Excel”，C:\WINDOWS\assembly\GAC_32\Kingsoft.Office.Interop.Etapi\3.0.0.0__15d99fb7f8fe5cb4\Kingsoft.Office.Interop.Etapi.dll
com组件 Upgrade WPS Presentation 3.0 Object Library (Beta)，对应“PowerPoint”，C:\WINDOWS\assembly\GAC_32\Kingsoft.Office.Interop.Wppapi\3.0.0.0__15d99fb7f8fe5cb4\Kingsoft.Office.Interop.Wppapi.dll
com组件Upgrade Kingsoft WPS 3.0 Object Library (Beta)，对应“Word”，C:\WINDOWS\assembly\GAC_32\Kingsoft.Office.Interop.Wpsapi\3.0.0.0__15d99fb7f8fe5cb4\Kingsoft.Office.Interop.Wpsapi.dll
public static class WpsToPdf { /// <summary> /// word转pdf /// </summary> /// <param>源<see cref="string"/>.</param> /// <param>新文件路径<see cref="string"/>.</param> /// <returns>The <see cref="bool"/>.</returns> public static bool WordWpsToPdf(string source, string newFilePath) { if (source == null) throw new ArgumentNullException(nameof(source)); if (newFilePath == null) throw new ArgumentNullException(nameof(newFilePath)); var type = Type.GetTypeFromProgID("KWps.Application"); dynamic wps = Activator.CreateInstance(type); try { //用wps打开word不显示界面 dynamic doc = wps.Documents.Open(source, Visible: false); //转pdf doc.ExportAsFixedFormat(newFilePath, WdExportFormat.wdExportFormatPDF); //设置隐藏菜单栏和工具栏 //wps.setViewerPreferences(PdfWriter.HideMenubar | PdfWriter.HideToolbar); doc.Close(); } catch (Exception e) { //添加你的日志代码 return false; } finally { wps.Quit(); GC.Collect(); GC.WaitForPendingFinalizers(); } return true; } /// <summary> /// excel转pdf /// </summary> /// <param>源<see cref="string"/>.</param> /// <param>新文件路径<see cref="string"/>.</param> /// <returns>The <see cref="bool"/>.</returns> public static bool ExcelToPdf(string source, string newFilePath) { if (source == null) throw new ArgumentNullException(nameof(source)); if (newFilePath == null) throw new ArgumentNullException(nameof(newFilePath)); var type = Type.GetTypeFromProgID("KET.Application"); dynamic wps = Activator.CreateInstance(type); try { var targetType = XlFixedFormatType.xlTypePDF; var missing = Type.Missing; //转pdf var doc = wps.Application.Workbooks.Open(source, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing); doc.ExportAsFixedFormat(targetType, newFilePath, XlFixedFormatQuality.xlQualityStandard, true, false, missing, missing, missing, missing); doc.Close(); } catch (Exception e) { //添加你的日志代码 return false; } finally { wps.Quit(); GC.Collect(); GC.WaitForPendingFinalizers(); } return true; } /// <summary> /// ppt转pdf /// </summary> /// <param>源<see cref="string"/>.</param> /// <param>新文件路径<see cref="string"/>.</param> /// <returns>The <see cref="bool"/>.</returns> public static bool PptToPdf(string source, string newFilePath) { var type = Type.GetTypeFromProgID("KWPP.Application"); dynamic wps = Activator.CreateInstance(type); try { //转pdf var doc = wps.Presentations.Open(source, MsoTriState.msoCTrue, MsoTriState.msoCTrue, MsoTriState.msoCTrue); doc.SaveAs(newFilePath, PpSaveAsFileType.ppSaveAsPDF, MsoTriState.msoTrue); doc.Close(); } catch (Exception e) { //添加你的日志代码 return false; } finally { wps.Quit(); GC.Collect(); GC.WaitForPendingFinalizers(); } return true; } }