Web服务器上文件下载

<a onclick='DownFile(this,\"{1}\")' href='javascript:void(0);' >{0}</a>

function DownFile(my, id) {
            var url = '<%=Url.Action("Download") %>' + '/' + id;
            window.location.href = url;

} 

 

[Authorize]
        public ActionResult Download(string id)
        {
            if (string.IsNullOrEmpty(id))
                throw new ArgumentNullException("FileName");

            Contract.Domain.Document doc = dsvc.FindById(id);

            string physicFolder = Utility.Util.GetPhysicalFolder(doc.SaveFolder);
            if (string.IsNullOrEmpty(physicFolder))
                throw new ArgumentNullException(doc.SaveFolder, "配置文件未定义该路径!");

            using (new Utility.Support.UncAccess(physicFolder))
            {
                string path = Path.Combine(physicFolder,
                    doc.FileName);
                var result = global::System.IO.File.OpenRead(path);
                string fileName = doc.Title + doc.FileExt;
                HttpContext.Response.Clear();
                HttpContext.Response.ContentType = "application/octet-stream";
                HttpContext.Response.AddHeader("Content-Disposition", "attachment;filename=\"" + HttpUtility.UrlEncode(fileName) + "\"");  //HttpUtility.UrlEncode(Path.GetFileName(path).Trim())
                HttpContext.Response.Flush();
                HttpContext.Response.WriteFile(path);
                HttpContext.Response.End();
                return View();
                //return File(result, "application/octet-stream", doc.Title + doc.FileExt);
            }
        }