Tạo jQuery Mega Menu Navigation bar với bootstrap trong Asp.net

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(jQuery Mega Menu Navigation bar with bootstrap in Asp.net) – Khi Menu trong Website của bạn có nhiều cấp, đặc biệt là Website thương mại điện tử nếu không được sắp xếp hiển thị khoa học sẽ gây khó khăn cho người sử dụng. Bài viết dưới đây sẽ hướng dẫn các bạn cách sử dụng Control Repeater và thư viện bootstrap để tạo Mega Menu Navigation bar. Menu gồm 3 cấp, các thông tin như: Tên Menu, đường dẫn, Css được lấy từ CSDL SQL Server.

- B1: Tạo CSDL DynamicallyMenu trong SQL Server

- B2: Tạo Bảng MenuItems có cấu trúc phía dưới trong CSDL SQL Server.

- B3: Nhập dữ liệu cho bảng MenuItems

- B4: Tạo stored procedure trong SQL Server

CREATE Procedure [dbo].[Pro_Menu_List]

@ParentID int,

@IsVisible bit

declare @strSQL nvarchar(1000)

declare @strWhere nvarchar(500)

declare @strOrder nvarchar (50)

set @strSQL= 'Select * from MenuItems'

set @strWhere =' where 1=1'

if @IsVisible=0

set @strWhere= @strWhere +' and (IsVisible=0 Or IsVisible Is Null)'

if @ParentID<>-1 And @ParentID<>0

set @strWhere= @strWhere +' and ParentID='+ convert(nvarchar,@ParentID)

if @ParentID=-1

set @strWhere= @strWhere +' and (ParentID=-1 Or ParentID Is Null)'

set @strOrder =' Order by MenuOrder, MenuName'

set @strSQL=@strSQL+@strWhere+@strOrder

print @strSQL

exec sp_executesql @strSQL

Bạn có thể tải về bảng cơ sở dữ liệu SQL bằng cách nhấn vào liên kết tải về dưới đây

- B5: Tạo Project trong Microsoft Visual Studio 2010

Trong Visual Studio tạo 1 Class có tên: Utility và nhập đoạn Code phía dưới cho Class này.

C# Code

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Data.SqlClient;

using System.Data;

using System.Configuration;

namespace MegaMenuNavigationBar

{

public class SqlDataProvider

{

#region "Membres Prives"

private string _connectionString;

#endregion

#region "Constructeurs"

public SqlDataProvider()

{

try

{

_connectionString = ConfigurationManager.ConnectionStrings["SiteSqlServer"].ConnectionString;

}

catch

{

}

#endregion

#region "Proprietes"

public string ConnectionString

{

get { return _connectionString; }

}

#endregion

#region "Functions"

public DataTable FillTable(string ProcName, params ObjectPara[] Para)

{

try

{

DataTable tb = new DataTable();

SqlDataAdapter adap = new SqlDataAdapter(ProcName, _connectionString);

adap.SelectCommand.CommandType = CommandType.StoredProcedure;

if (Para != null)

{

foreach (ObjectPara p in Para)

{

adap.SelectCommand.Parameters.Add(new SqlParameter(p.Name, p.Value));

}

adap.Fill(tb);

return tb;

}

catch

{

return null;

}

#endregion

}

public class ObjectPara

{

string _name;

object _Value;

public ObjectPara(string Pname, object PValue)

{

_name = Pname;

_Value = PValue;

}

public string Name

{

get { return _name; }

set { _name = value; }

}

public object Value

{

get { return _Value; }

set { _Value = value; }

}

VB.NET Code

Imports System.Data.SqlClient

Imports System.Data

Namespace MegaMenuNavigationBar

Public Class SqlDataProvider

#Region "Membres Prives"

Shared _IsError As Boolean = False

Private _connectionString As String

#End Region

#Region "Constructeurs"

Public Sub New()

Try

_connectionString = ConfigurationManager.ConnectionStrings("SiteSqlServer").ConnectionString

_IsError = False

Catch ex As Exception

_IsError = True

End Try

End Sub

#End Region

#Region "Proprietes"

Public ReadOnly Property ConnectionString() As String

Get

Return _connectionString

End Get

End Property

#End Region

#Region "Functions"

Public Function FillTable(ByVal ProcName As String, ByVal ParamArray Para() As ObjectPara) As DataTable

Try

Dim tb As New DataTable

Dim adap As New SqlDataAdapter(ProcName, _connectionString)

adap.SelectCommand.CommandType = CommandType.StoredProcedure

If Not Para Is Nothing Then

For Each p As ObjectPara In Para

adap.SelectCommand.Parameters.Add(New SqlParameter(p.Name, p.Value))

End If

adap.Fill(tb)

Return tb

Catch ex As Exception

Return Nothing

End Try

End Function

#End Region

End Class

Public Class ObjectPara

Dim _name As String

Dim _Value As Object

Sub New(ByVal Pname As String, ByVal PValue As Object)

_name = Pname

_Value = PValue

End Sub

Public Property Name() As String

Get

Return _name

End Get

Set(ByVal value As String)

_name = value

End Set

End Property

Public Property Value() As Object

Get

Return _Value

End Get

Set(ByVal value As Object)

_Value = value

End Set

End Property

End Class

End Namespace

Chú ý: Thuộc tính SiteSqlServer chính là chuỗi Connect với SQL Server trong file Web.Config

- B6: Mở file Site.Master dạng HTML và bổ xung đoạn mã phía dưới trong thẻ Head

<title>How to create mega menu navigation bar with twitter bootstrap 3.0</title>

<asp:ContentPlaceHolder ID="HeadContent" runat="server">

</asp:ContentPlaceHolder>

</head>

- B7: Mở file Default.aspx dưới dạng HTML và nhập mã HTML

<%@ Page Title="How to create mega menu navigation bar with twitter bootstrap in Asp.net" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="MegaMenuNavigationBar._Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">

</asp:Content>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

<h3>

How to create mega menu navigation bar with twitter bootstrap 3.0 in Asp.net

</h3>

<asp:Repeater ID="rptMenu" OnItemDataBound="rptMenu_ItemDataBound" runat="server">

<a href='<%# Eval("URL")%>' class="dropdown-toggle" data-toggle="dropdown"><%# Eval("MenuName")%><b class="caret"></b></a>

<asp:Repeater ID="rptMenu1" OnItemDataBound="Detail_Bound" runat="server">

<ul>

<asp:Repeater ID="rptMenu2" runat="server">

</ItemTemplate>

</asp:Repeater>

</ul>

</li>

</ItemTemplate>

</asp:Repeater>

</ul>

</li>

</ItemTemplate>

</asp:Repeater>

</ul>

</div>

</asp:Content>

- B8: Viết Code cho file Default.aspx

C# Code

//Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials

using Microsoft.VisualBasic;

using System;

using System.Collections;

using System.Collections.Generic;

using System.Data;

using System.IO;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace MegaMenuNavigationBar

{

public partial class _Default : System.Web.UI.Page

{

#region "Create Menu"

private void CreateMenu()

{

DataTable objBind = new DataTable();

objBind = BindData(-1);

if (objBind != null)

{

if (objBind.Rows.Count > 0)

{

rptMenu.DataSource = objBind;

rptMenu.DataBind();

}

#endregion

#region "Bind Data"

private DataTable BindData(int ParentID)

{

SqlDataProvider objSQL = new SqlDataProvider();

DataTable objBind = objSQL.FillTable("Pro_Menu_List", new ObjectPara("@ParentID", ParentID), new ObjectPara("@IsVisible", 1));

return objBind;

}

#endregion

#region "Repeater Methods"

protected void rptMenu_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)

{

if (e.Item.ItemType == ListItemType.Item | e.Item.ItemType == ListItemType.AlternatingItem)

{

int MenuID = Convert.ToInt32(DataBinder.Eval(e.Item.DataItem, "MenuID"));

string MenuName = DataBinder.Eval(e.Item.DataItem, "MenuName").ToString();

DataTable objBind = new DataTable();

objBind = BindData(MenuID);

Repeater rptMenu = (Repeater)e.Item.FindControl("rptMenu1");

if (rptMenu != null)

{

rptMenu.DataSource = objBind;

rptMenu.DataBind();

}

protected void Detail_Bound(object sender, RepeaterItemEventArgs e)

{

try

{

if (e.Item.ItemType == ListItemType.Item | e.Item.ItemType == ListItemType.AlternatingItem)

{

int MenuID = Convert.ToInt32(DataBinder.Eval(e.Item.DataItem, "MenuID"));

string MenuName = DataBinder.Eval(e.Item.DataItem, "MenuName").ToString();

DataTable objBind = new DataTable();

objBind = BindData(MenuID);

Repeater rptMenu = (Repeater)e.Item.FindControl("rptMenu2");

if (rptMenu != null)

{

rptMenu.DataSource = objBind;

rptMenu.DataBind();

}

catch

{

}

#endregion

#region "Event Handles"

protected void Page_Load(object sender, System.EventArgs e)

{

try

{

if (!IsPostBack)

{

CreateMenu();

}

catch

{

}

#endregion

}

VB.NET Code

'Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials

Namespace MegaMenuNavigationBar

Public Class _Default

Inherits System.Web.UI.Page

#Region "Create Menu"

Private Sub CreateMenu()

Dim objBind As New DataTable

objBind = BindData(-1)

If Not objBind Is Nothing Then

If objBind.Rows.Count > 0 Then

rptMenu.DataSource = objBind

rptMenu.DataBind()

End If

End Sub

#End Region

#Region "Bind Data"

Private Function BindData(ByVal ParentID As Integer) As DataTable

Dim objSQL As New SqlDataProvider

Dim objBind As DataTable = objSQL.FillTable("Pro_Menu_List", New ObjectPara("@ParentID", ParentID), New ObjectPara("@IsVisible", 1))

Return objBind

End Function

#End Region

#Region "Repeater Methods"

Private Sub rptMenu_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptMenu.ItemDataBound

If (e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem) Then

Dim MenuID As Integer = DataBinder.Eval(e.Item.DataItem, "MenuID")

Dim MenuName As String = DataBinder.Eval(e.Item.DataItem, "MenuName")

Dim objBind As New DataTable

objBind = BindData(MenuID)

Dim rptMenu1 As Repeater = DirectCast(e.Item.FindControl("rptMenu1"), Repeater)

If Not rptMenu1 Is Nothing Then

rptMenu1.DataSource = objBind

rptMenu1.DataBind()

End If

End Sub

Public Sub Detail_Bound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)

Try

If (e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem) Then

Dim MenuID As Integer = DataBinder.Eval(e.Item.DataItem, "MenuID")

Dim MenuName As String = DataBinder.Eval(e.Item.DataItem, "MenuName")

Dim objBind As New DataTable

objBind = BindData(MenuID)

Dim rptMenu As Repeater = DirectCast(e.Item.FindControl("rptMenu2"), Repeater)

If Not rptMenu Is Nothing Then

rptMenu.DataSource = objBind

rptMenu.DataBind()

End If

Catch exception As Exception

End Try

End Sub

#End Region

#Region "Event Handles"

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Try

If Page.IsPostBack = False Then

CreateMenu()

End If

Catch ex As Exception

End Try

End Sub

#End Region

End Class

End Namespace

Bây giờ chạy Project bạn sẽ có kết quả như ảnh phía dưới.

Chúc các bạn thành công!

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