Aspose.Cell 生成带水印的excel文件

 private void ExportDataSet(string fileName, string templatePath, DataSet ds, HttpResponse reponse, FileFormatType FileType= FileFormatType.Xlsx)
        {
            Aspose.Cells.License Clicense = new Aspose.Cells.License();
            string asposePath = Server.MapPath(ConfigurationManager.AppSettings["AsposeLicensePath"]);
            //string asposePath = Server.MapPath(@"../Template/Aspose/Aspose.Total.lic");
            Clicense.SetLicense(asposePath);

            WorkbookDesigner designer = new WorkbookDesigner();

            designer.Open(Server.MapPath(templatePath));
            designer.SetDataSource(ds);

            // 生成水印图片
            Aspose.Cells.Drawing.Shape wordart = designer.Workbook.Worksheets[0].Shapes.AddTextEffect(MsoPresetTextEffect.TextEffect1,
"CONFIDENTIAL", "Arial Black", 60, false, true
, 1, 8, 1, 1, 130, 500);

            //Get the fill format of the word art
            MsoFillFormat wordArtFormat = wordart.FillFormat;

            //Set the color
            wordArtFormat.ForeColor = System.Drawing.Color.Red;

            //Set the transparency
            wordArtFormat.Transparency = 0.9;

            //Make the line invisible
            MsoLineFormat lineFormat = wordart.LineFormat;
            lineFormat.IsVisible = false;

            designer.Process();
            //将流文件写到客户端流的形式写到客户端
            designer.Save(fileName, SaveType.OpenInExcel, FileType, reponse);
        }