Aspose.Cell C# 导出数据

DataTable dt = dal.ExecuteDataTable(cmd, null);
        dt.TableName = "tb";
        string path = System.IO.Path.Combine(HttpRuntime.AppDomainAppPath, @"Template\结果导出模版.xls");
        Workbook book = new Workbook(path);
        WorkbookDesigner wd = new WorkbookDesigner(book);
        //string title = string.Format("{0} 至 {1} 活跃度", sd.ToString("yyyy-MM-dd"), ed.ToString("yyyy-MM-dd"));
        //wd.SetDataSource("Title", title);//替换值

        wd.SetDataSource(dt);

        wd.Process();
        System.IO.MemoryStream ms = wd.Workbook.SaveToStream();
        byte[] bt = ms.ToArray();
        //客户端保存的文件名  
        //以字符流的形式下载文件    
        string file = string.Format("{0}.xls", "结果导出");
        System.Web.HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
        System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + file);
        System.Web.HttpContext.Current.Response.OutputStream.Write(bt, 0, bt.Length);