mvc中上传图片到指定文件夹中

前台:

 @using (Html.BeginForm("AddImg", "UpFileImg", FormMethod.Post, new { enctype = "multipart/form-data" }))
    {
    <input type="file" name="file" />
    <input type="submit" value="OK" />
    }

后台:

 [HttpPost]
        public ActionResult AddImg(HttpPostedFileBase file)
        {
            if (file != null && file.ContentLength > 0) 
            {
          
                var fileName =System.IO.Path.GetFileName(file.FileName);
                var path = System.IO.Path.Combine(Server.MapPath("/img"), fileName);
                file.SaveAs(path);
            }
            return Content("上传成功");
        }