public FileResult Export(bool?privacy) { MemberSearch search = Session[$"ExportSearch"] as MemberSearch; if (search == null) { search = new MemberSearch(); } ViewData["Info"] = ManagerDAO.GetAll(search); ViewData["Privacy"] = privacy ?? false; string html = Utility.GetViewHtml(this, "Export", null); string title = $"管理者名單{DateTime.Now.ToString("yyyyMMdd")}.xls"; return(File(System.Text.Encoding.UTF8.GetBytes(html), "application/vnd.ms-excel", title)); }