$(".treeview a").on("click", function () {
        $.ajax({
            url: '@Url.Action("GetTreeViewID", "Treeview", new { Eid=Model.FirstOrDefault().EmpID})'
                  });
    });
 
am getting first treeview node id, if i remove firstofdefault am getting error 
 
but how to save selected node id in Eid