Request.Files相同的文件上传asp.net mvc

            foreach (string fileName in Request.Files)
            {
                HttpPostedFileBase file = Request.Files[fileName];

                //Save file content goes here
                fName = file.FileName;
                if (file != null && file.ContentLength > 0)
                {


                    subPath = ConfigurationManager.AppSettings["SubPath"].ToString() + "/" + currentUserId;
                    bool isExists = System.IO.Directory.Exists(Server.MapPath(subPath));

                    if (!isExists)
                        System.IO.Directory.CreateDirectory(Server.MapPath(subPath));


                    string path = System.IO.Path.Combine(Server.MapPath(subPath), System.IO.Path.GetFileName(file.FileName));
                    file.SaveAs(path);



                }

            }
            foreach (string fileName in Request