Sử dụng Repeater để tạo jQuery Vertical Mega Menu trong Asp.net

By Unknown - Saturday, August 29, 2015 - No Comments

(jQuery Vertical Mega Menu in Asp.net) – Đối với các Website thương mại điện tử, do số lượng các ngành hàng nhiều và có nhiều cấp nên việc phân loại ngành hàng càng đơn giản, thuận tiện càng dễ cho người mua hàng thì hàng hóa sẽ bán được nhiều hơn. Bài viết dưới đây sẽ hướng dẫn các bạn cách sử dụng Control Repeater và thư viện jQuery để tạo Vertical Menu. Menu gồm 3 cấp, các thông tin 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

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 jQueryVerticalMegaMenu

{

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 jQueryVerticalMegaMenu

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 sql As String) As DataTable

Try

Dim tb As New DataTable

Dim adap As New SqlDataAdapter(sql, _connectionString)

adap.Fill(tb)

Return tb

Catch ex As Exception

Return Nothing

End Try

End Function

#End Region

End Class

End Namespace

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

<title>jQuery Vertical Mega Menu in Asp.net</title>

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

</asp:ContentPlaceHolder>

</head>

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

<%@ Page Title="jQuery Vertical Mega Menu in Asp.net" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="jQueryVerticalMegaMenu._Default" %>

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

</asp:Content>

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

<h3>

jQuery Vertical Mega Menu in Asp.net

</h3>

$(document).ready(function ($) {

$('#mega-1').dcVerticalMegaMenu({

rowItems: '3',

speed: 'fast',

effect: 'slide',

direction: 'right'

});

</script>

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

<asp:Literal ID="ltMenu" runat="server"></asp:Literal>

<ul>

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

<ul>

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

</li>

</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.Diagnostics;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace jQueryVerticalMegaMenu

{

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 "Event Handles"

#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)

{

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();

}

#endregion

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 jQueryVerticalMegaMenu

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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