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WPS转PDF

 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(@"正在转换 [{0}] -> [{1}]", wpsFilename, pdfFilename));
            Document doc = wps.Documents.Open(wpsFilename, Visible : true);
           
            //取消文字隐藏，因为他们的红头是隐藏的
            doc.Content.Font.Hidden = 0;
            doc.ActiveWindow.View.ShowRevisionsAndComments = false; //不显示批注等
            doc.ActiveWindow.View.RevisionsView = WPS.WpsRevisionsView.wpsRevisionsViewFinal;//最终状态显示文档

            doc.ExportPdf(pdfFilename);
            doc.Close(SaveChanges : false);//不保存修改，无提示
        }

        public void Dispose()
        {
            if (wps != null) { wps.Terminate(); }
        }
    }