<form>
        <div id="queue"></div>
        <input id="file_upload" name="file_upload" type="file" multiple="true">
    </form>

 $(function () {
            $("#file_upload").uploadify({
                height: 20,
                swf: 'uploadify/uploadify.swf',
                uploader: 'Home/UpLoad',   //如果是默认的路由
                'onComplete': function (event, queueId, fileObj, response, data) {
                  
                },
                'cancelImg': 'uploadify/uploadify-cancel.png',
                width: 80
            });
        });

 public ActionResult UpLoad()
        {
            HttpPostedFileBase files = Request.Files["Filedata"];
            return Content("ok");
        }