<link rel="stylesheet" type="text/css" href="http://www.uploadify.com/wp-content/themes/uploadify/style.css">
<script type="text/javascript" src="http://www.uploadify.com/wp-content/themes/uploadify/js/jquery.min.js"></script>
<script type="text/javascript" src="http://www.uploadify.com/wp-content/themes/uploadify/js/jquery.uploadify.min.js"></script>

<input type="file" name="file_upload" id="file_upload" />
<a href="javascript:$('#file_upload').uploadify('upload','*')">Upload Files</a>
<script type="text/javascript">
    $(function () {
        $("#file_upload").uploadify({
            'auto': false,
            'swf' : '@Url.Content("~/Content/uploadify.swf")',
            'uploader': '/Home/PhotosUpload'
        });
    });

</script>

 public ActionResult Index()
        {
            return View();
        }
        ///然后选好图片，点击上传
        [HttpPost]
        public ContentResult PhotosUpload(string AlbumID)
        {

            Response.ContentType = "text/plain";
            Response.Charset = "utf-8";
           
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFileBase postedFile = HttpContext.Request.Files[i];

                string filepath = Path.Combine(HttpContext.Server.MapPath("../Upload"), Path.GetFileName(postedFile.FileName));
                postedFile.SaveAs(filepath);
               
            }
            Response.Write("Upload The File Successfully!");
            return Content("11");

        }