public IHttpActionResult tooltip(string sitemapid = "") { Guid sitemapGuid = Guid.Empty;; if (!Guid.TryParse(sitemapid, out sitemapGuid)) { return(NotFound()); } var data = _DropDownService.GetTooltip(sitemapGuid); if (data == null) { return(NotFound()); } return(Ok(data)); }