public ActionResult Edit(Guid pk, string name, string value)
        {
            var result = String.Empty;
            var model  = _photoService.GetPhotoById(pk);

            if (name.Equals("remark"))
            {
                model.Remark = value;
                _photoService.ChangePhotoDetail(pk, model);
                result = @"修改图片描述成功";
            }
            if (Request.IsAjaxRequest())
            {
                var data = new { success = true, message = result };
                return(Json(data));
            }
            return(new EmptyResult());
        }