MVC上传(单文件)

后台代码：

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public ActionResult upload()        {            //获取文件对象            var file = Request.Files[0];            string suffix/*文件格式*/ = System.IO.Path.GetExtension(file.FileName);            string fileName = DateTime.Now.ToString("yyyyMMddHHmmssfff") + suffix;            string saveDic = "/upload/";            if (file != null)            {                if (!Directory.Exists(Server.MapPath(saveDic)))                {                    Directory.CreateDirectory(Server.MapPath(saveDic));                  }                file.SaveAs(Server.MapPath(saveDic) + fileName);                                 return Content("<script>alert('添加成功!')</script>");            }            else            {                return Content("0");            }        }

 前台代码：

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<form action="/test/upload" enctype="multipart/form-data" method="post">     <input type="file" name="file" />     <button id="upload">确定</button> </form>