using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.IO;using Microsoft.Office.Interop.Word;namespace JDOMS.WebAPI.Controllers.Zjn.Utils{ class WpsToPdf : IDisposable { dynamic wps; public WpsToPdf() {  //創建wps實例，需提前安裝wps  Type type = Type.GetTypeFromProgID("KWps.Application");  wps = Activator.CreateInstance(type); } /// <summary> /// 根據文件在服務器上的路徑下載文件 /// </summary> /// <param name="wpsFilename">Wps文件路徑</param> /// <param name="pdfFilename">Pdf文件路徑</param> /// <returns></returns> public void ToPdf(string wpsFilename, string pdfFilename = null) {  if (wpsFilename == null)  {  throw new ArgumentNullException("wpsFilename");   }  if (pdfFilename == null)  {  pdfFilename = Path.ChangeExtension(wpsFilename, "pdf");  }  Console.WriteLine(string.Format(@"正在轉換 [{0}] -> [{1}]", wpsFilename, pdfFilename));  //用wps 打開word不顯示界面  dynamic doc = wps.Documents.Open(wpsFilename, Visible: false);  //doc 轉pdf   doc.ExportAsFixedFormat(pdfFilename, WdExportFormat.wdExportFormatPDF);  doc.Close(); } public void Dispose() {  if (wps != null) { wps.Quit(); } } }}