Shashikant says:
Please refer below link
N-Level (MultiLevel) Bootstrap Responsive ASP.Net Menu control for Mobile Phone, Tablet and Desktop display
You have not used my code.In my code thare is below script
JavaScript
<script type="text/javascript">
Sys.WebForms.Menu._elementObjectMapper.getMappedObject = function () {
return false;
};
$(function () {
debugger;
$(".navbar-nav li, .navbar-nav a, .navbar-nav ul").removeAttr('style');
$(".dropdown-menu").closest("li").removeClass().addClass("dropdown-toggle");
$(".dropdown-toggle").find("a[href='javascript:;']").attr("data-toggle", "dropdown");
$(".dropdown-toggle").find("a[href='javascript:;'].level1").append("<span class='caret'></span>");
$(".dropdown-toggle").find("a[href='javascript:;']:not(.level1)").closest('li').addClass('dropdown-submenu');
$("a.selected").closest("li").addClass("active");
$("a.selected").closest(".dropdown-toggle").addClass("active");
$('ul.dropdown-menu [data-toggle=dropdown]').on('click', function (event) {
event.preventDefault();
event.stopPropagation();
$(this).parent().siblings().removeClass('open');
$(this).parent().toggleClass('open');
});
});
</script>