C# wps转pdf（word、ppt、excel），在线预览pdf

wps转pdf

　　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:WINDOWSassemblyGAC_32Kingsoft.Office.Interop.Etapi3.0.0.0__15d99fb7f8fe5cb4Kingsoft.Office.Interop.Etapi.dll

　　　　com组件 Upgrade WPS Presentation 3.0 Object Library (Beta)，对应“PowerPoint”，C:WINDOWSassemblyGAC_32Kingsoft.Office.Interop.Wppapi3.0.0.0__15d99fb7f8fe5cb4Kingsoft.Office.Interop.Wppapi.dll

　　　　com组件Upgrade Kingsoft WPS 3.0 Object Library (Beta)，对应“Word”，C:WINDOWSassemblyGAC_32Kingsoft.Office.Interop.Wpsapi3.0.0.0__15d99fb7f8fe5cb4Kingsoft.Office.Interop.Wpsapi.dll

    public static class WpsToPdf
    {
        /// <summary>
        /// word转pdf
        /// </summary>
        /// <param name="source">源<see cref="string"/>.</param>
        /// <param name="newFilePath">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 name="source">源<see cref="string"/>.</param>
        /// <param name="newFilePath">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 name="source">源<see cref="string"/>.</param>
        /// <param name="newFilePath">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;
        }
    }

 在线预览pdf

　　以前一直搜索不到“在线预览pdf”方法，后来在使用Aspose时发现了在线预览的秘密，跟大家分享下。

　　注意：在线预览pdf主要使针对比较现代化的浏览器。

　　

      后台输出pdf时要设置输出