Hi test0101,
You are directly return the DataTable. You did not filter the record based on the parentMenuId.
So change the code with below.
Master Page
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<asp:ContentPlaceHolder ID="head" runat="server">
</asp:ContentPlaceHolder>
</head>
<body>
<form id="form1" runat="server">
<link rel="stylesheet" href='http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/css/bootstrap.min.css'
media="screen" />
<script type="text/javascript" src='http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.3.min.js'></script>
<script type="text/javascript" src='http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/js/bootstrap.min.js'></script>
<style type="text/css">
.dropdown-submenu
{
position: relative;
}
.dropdown-submenu > .dropdown-menu
{
top: 0;
left: 100%;
margin-top: -6px;
margin-left: -1px;
-webkit-border-radius: 0 6px 6px 6px;
-moz-border-radius: 0 6px 6px 6px;
border-radius: 0 6px 6px 6px;
}
.dropdown-submenu > a:after
{
display: block;
content: " ";
float: right;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
border-width: 5px 0 5px 5px;
border-left-color: #cccccc;
margin-top: 5px;
margin-right: -10px;
}
.dropdown-submenu:hover > a:after
{
border-left-color: #555;
}
.dropdown-submenu.pull-left
{
float: none;
}
.dropdown-submenu.pull-left > .dropdown-menu
{
left: -100%;
margin-left: 10px;
-webkit-border-radius: 6px 0 6px 6px;
-moz-border-radius: 6px 0 6px 6px;
border-radius: 6px 0 6px 6px;
}
</style>
<div class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"
aria-expanded="false">
<span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span><span
class="icon-bar"></span><span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">ASPSnippets</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<asp:Menu ID="Menu1" runat="server" Orientation="Horizontal" RenderingMode="List"
IncludeStyleBlock="false" StaticMenuStyle-CssClass="nav navbar-nav" DynamicMenuStyle-CssClass="dropdown-menu">
</asp:Menu>
</div>
</div>
</div>
<script type="text/javascript">
Sys.WebForms.Menu._elementObjectMapper.getMappedObject = function () {
return false;
};
$(function () {
$(".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>
<hr />
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</form>
</body>
</html>
Namespaces
C#
using System.Data;
using System.IO;
VB.Net
Imports System.Data
Imports System.IO
Code
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DataTable dt = this.GetData(0);
PopulateMenu(dt, 0, null);
}
}
private DataTable GetData(int parentMenuId)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[4] {
new DataColumn("ParentMenuId"),
new DataColumn("MenuId"),
new DataColumn("Title"),
new DataColumn("Url") });
dt.Rows.Add(0, 1, "Home", "~/Home.aspx");
dt.Rows.Add(0, 2, "Services", "javascript:;");
dt.Rows.Add(0, 3, "About", "javascript:;");
dt.Rows.Add(0, 4, "Contact ", "~/Contact.aspx");
dt.Rows.Add(2, 5, "Consulting", "~/Consulting.aspx");
dt.Rows.Add(2, 6, "Outsourcing ", "~/Outsourcing.aspx");
dt.Rows.Add(3, 7, "About1", "javascript:;");
dt.Rows.Add(3, 8, "About2", "~/About2.aspx");
dt.Rows.Add(7, 9, "About11", "~/About11.aspx");
dt.Rows.Add(7, 10, "About12", "~/About12.aspx");
DataTable dtFinal = dt.Clone();
DataRow[] dr = dt.Select("ParentMenuId=" + parentMenuId);
if (dr.Length > 0)
{
dtFinal = dr.CopyToDataTable();
}
return dtFinal;
}
private void PopulateMenu(DataTable dt, int parentMenuId, MenuItem parentMenuItem)
{
string currentPage = Path.GetFileName(Request.Url.AbsolutePath);
foreach (DataRow row in dt.Rows)
{
MenuItem menuItem = new MenuItem
{
Value = row["MenuId"].ToString(),
Text = row["Title"].ToString(),
NavigateUrl = row["Url"].ToString(),
Selected = row["Url"].ToString().EndsWith(currentPage, StringComparison.CurrentCultureIgnoreCase)
};
if (parentMenuId == 0)
{
Menu1.Items.Add(menuItem);
DataTable dtChild = this.GetData(int.Parse(menuItem.Value));
PopulateMenu(dtChild, int.Parse(menuItem.Value), menuItem);
}
else
{
parentMenuItem.ChildItems.Add(menuItem);
if (parentMenuId > 0)
{
DataTable dtChild = this.GetData(int.Parse(menuItem.Value));
PopulateMenu(dtChild, int.Parse(menuItem.Value), menuItem);
}
}
}
}
VB.Net
Protected Sub Page_Load(sender As Object, e As EventArgs)
If Not Me.IsPostBack Then
Dim dt As DataTable = Me.GetData(0)
PopulateMenu(dt, 0, Nothing)
End If
End Sub
Private Function GetData(parentMenuId As Integer) As DataTable
Dim dt As DataTable = New DataTable()
dt.Columns.AddRange(New DataColumn(3) {
New DataColumn("ParentMenuId"),
New DataColumn("MenuId"),
New DataColumn("Title"),
New DataColumn("Url")})
dt.Rows.Add(0, 1, "Home", "~/Home.aspx")
dt.Rows.Add(0, 2, "Services", "javascript:;")
dt.Rows.Add(0, 3, "About", "javascript:;")
dt.Rows.Add(0, 4, "Contact ", "~/Contact.aspx")
dt.Rows.Add(2, 5, "Consulting", "~/Consulting.aspx")
dt.Rows.Add(2, 6, "Outsourcing ", "~/Outsourcing.aspx")
dt.Rows.Add(3, 7, "About1", "javascript:;")
dt.Rows.Add(3, 8, "About2", "~/About2.aspx")
dt.Rows.Add(7, 9, "About11", "~/About11.aspx")
dt.Rows.Add(7, 10, "About12", "~/About12.aspx")
Dim dtFinal As DataTable = dt.Clone()
Dim dr As DataRow() = dt.Select("ParentMenuId=" & parentMenuId)
If dr.Length > 0 Then
dtFinal = dr.CopyToDataTable()
End If
Return dtFinal
End Function
Private Sub PopulateMenu(dt As DataTable, parentMenuId As Integer, parentMenuItem As MenuItem)
Dim currentPage As String = Path.GetFileName(Request.Url.AbsolutePath)
For Each row As DataRow In dt.Rows
Dim menuItem As New MenuItem() With { _
.Value = row("MenuId").ToString(), _
.Text = row("Title").ToString(), _
.NavigateUrl = row("Url").ToString(), _
.Selected = row("Url").ToString().EndsWith(currentPage, StringComparison.CurrentCultureIgnoreCase) _
}
If parentMenuId = 0 Then
Menu1.Items.Add(menuItem)
Dim dtChild As DataTable = Me.GetData(Integer.Parse(menuItem.Value))
PopulateMenu(dtChild, Integer.Parse(menuItem.Value), menuItem)
Else
parentMenuItem.ChildItems.Add(menuItem)
If parentMenuId > 0 Then
Dim dtChild As DataTable = Me.GetData(Integer.Parse(menuItem.Value))
PopulateMenu(dtChild, Integer.Parse(menuItem.Value), menuItem)
End If
End If
Next
End Sub
Screenshot
