การลบไฟล์จากเซิฟเวอร์โดยใช้ jQuery กับ ASP.NET โดยไม่ refresh หน้า

$("#deleteAttachementPhoto").click(function () {
        $.post(url, { fileName: _fileNameAttachementPhoto }, function (data) {
            $("#ResumePart4").html(data);
        });
        alert(_fileNameAttachementPhoto);
    });

[HttpPost]
        public ActionResult DeleteConfirmed(string fileName)
        {
            var path = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName);
            FileInfo file = new FileInfo(path);
            if (file.Exists) {
                file.Delete();
            }
            return RedirectToAction("Index");
        }

<form id="formDeleteAttachementPhoto" action="" method="post" enctype="multipart/form-data"
                target="iframeAttachementPhoto">
                <iframe id="iframeDeleteAttachementPhoto" name="iframeDeleteAttachementPhoto" src="#" style="width: 0;
                    height: 0; border: 0px solid #fff;"></iframe>
                <div id="deleteFileAttachementPhoto">
                    <input type="submit" name="submit" id="deleteAttachementPhoto" />
                </div>
                </form>