не доходит get до контроллера [требует правки]

class ChartsList {
    private charts: Array<vwChart> = new Array<vwChart>();
    UpdateChart(): void {
        $.getJSON('http://localhost:4051/Home/GetCharts',
            (data) => {
                this.charts = data;
                var select = '<select class="form-control"> <option disabled selected> Select Chart< /option>'
                for (var i = 0; i < this.charts.length; i++) {
                    var selectRow =

                    '<option>' + this.charts[i].Name + '</option>';
                select += selectRow;
            }
            select += '<option disabled selected> работает < /option></select>';
            $("#Chart").replaceWith(select);
        });        
}
}
class vwChart {
Id: number;
Name: string;
Group: number;
Period: number;
PeriodName: string;
}
window.onload = () => {
    var chartsList: ChartsList = new ChartsList();
    $("#displayBtn").click(() => { chartsList.UpdateChart; });
}
_____________________________________________________________________________
    public class HomeController : Controller
    {
        private ChartModelEntities db = new ChartModelEntities();
        int selectedIndex = 1;
        public ActionResult Index()
        {
            ViewBag.Groups = db.vwGroups.ToList();
            ViewBag.Charts = db.vwCharts.Where(c => c.ID == selectedIndex).ToList();
            return View();
        }
        public JsonResult GetCharts(int id)
        {
            var Chart = db.vwCharts.ToList();
            return Json(Chart, JsonRequestBehavior.AllowGet);
        }
  }