C# 下载模板

/// <summary>
        /// 模板下载
        /// </summary>
        /// <returns></returns>
        public ActionResult Download()
        {
            // 防IE文件名乱码
            var fileName = HttpUtility.UrlEncode("模板.xlsx", System.Text.Encoding.UTF8);
            HttpContext.Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
            return File("/Templates/a.xlsx", fileName);
        }