public ActionResult Search()
        {
            var context    = new ContextImplement();
            var controller = new Implem.Pleasanter.Controllers.ItemsController();
            var htmlOrJson = controller.Search(context: context);

            if (!Request.IsAjaxRequest())
            {
                ViewBag.HtmlBody = htmlOrJson;
                return(View());
            }
            else
            {
                return(Content(htmlOrJson));
            }
        }