Asp.Net生成无限级菜单
首先创建SQL脚本
if exists (select * from sysobjects where id = OBJECT_ID('[Menu]') and OBJECTPROPERTY(id, 'IsUserTable') = 1) DROP TABLE [Menu] CREATE TABLE [Menu] ( [ID] [bigint] IDENTITY (1, 1) NOT NULL, [MenuName] [nvarchar] (200) NULL, [Menu_ICON] [bigint] NOT NULL DEFAULT (0), [Menu_URL] [varchar] (500) NULL, [ParentID] [bigint] NOT NULL DEFAULT (0), [AddTime] [datetime] NOT NULL, [ICON_URL] [varchar] (500) NULL) ALTER TABLE [Menu] WITH NOCHECK ADD CONSTRAINT [PK_sys_menu] PRIMARY KEY NONCLUSTERED ( [ID] ) SET IDENTITY_INSERT [Menu] ON
页面代码
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="common_menu.aspx.cs" Inherits="AccordMenu.common_menu" %> <!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <style type="text/css"> body { margin: 0; padding: 30px; background: #FFF; color: #666; } h1 { font: bold 16px Arial, Helvetica, sans-serif; } p { font: 11px Arial, Helvetica, sans-serif; } a { color: #900; text-decoration: none; } a:hover { background: #900; color: #FFF; } /*CSS Code for Menu Begin:*/ /* Root = Vertical, Secondary = Vertical */ ul#navmenu, ul#navmenu li, ul#navmenu ul { margin: 0; border: 0 none; padding: 0; width: 160px; /*For KHTML*/ list-style: none; } ul#navmenu li { display: block !important; /*For GOOD browsers*/ display: inline; /*For IE*/ position: relative; } /* Root Menu */ ul#navmenu a { border: 1px solid #FFF; border-right-color: #CCC; border-bottom-color: #CCC; padding: 0 6px; display: block; background: #EEE; color: #666; font: bold 10px/22px Verdana, Arial, Helvetica, sans-serif; text-decoration: none; height: auto !important; height: 1%; /*For IE*/ } /* Root Menu Hover Persistence */ ul#navmenu a:hover, ul#navmenu li:hover a, ul#navmenu li.iehover a { background: #CCC; color: #FFF; } /* 2nd Menu */ ul#navmenu li:hover li a, ul#navmenu li.iehover li a { background: #EEE; color: #666; } /* 2nd Menu Hover Persistence */ ul#navmenu li:hover li a:hover, ul#navmenu li:hover li:hover a, ul#navmenu li.iehover li a:hover, ul#navmenu li.iehover li.iehover a { background: #CCC; color: #FFF; } /* 3rd Menu */ ul#navmenu li:hover li:hover li a, ul#navmenu li.iehover li.iehover li a { background: #EEE; color: #666; } /* 3rd Menu Hover Persistence */ ul#navmenu li:hover li:hover li a:hover, ul#navmenu li:hover li:hover li:hover a, ul#navmenu li.iehover li.iehover li a:hover, ul#navmenu li.iehover li.iehover li.iehover a { background: #CCC; color: #FFF; } /* 4th Menu */ ul#navmenu li:hover li:hover li:hover li a, ul#navmenu li.iehover li.iehover li.iehover li a { background: #EEE; color: #666; } /* 4th Menu Hover */ ul#navmenu li:hover li:hover li:hover li a:hover, ul#navmenu li.iehover li.iehover li.iehover li a:hover { background: #CCC; color: #FFF; } ul#navmenu ul, ul#navmenu ul ul, ul#navmenu ul ul ul { display: none; position: absolute; top: 0; left: 160px; } /* Do Not Move - Must Come Before display:block for Gecko */ ul#navmenu li:hover ul ul, ul#navmenu li:hover ul ul ul, ul#navmenu li.iehover ul ul, ul#navmenu li.iehover ul ul ul { display: none; } ul#navmenu li:hover ul, ul#navmenu ul li:hover ul, ul#navmenu ul ul li:hover ul, ul#navmenu li.iehover ul, ul#navmenu ul li.iehover ul, ul#navmenu ul ul li.iehover ul { display: block; } </style> <script type="text/javascript"> <!-- navHover = function () { var lis = document.getElementById("navmenu").getElementsByTagName("LI"); for (var i = 0; i < lis.length; i++) { lis[i].onmouseover = function () { this.className += " iehover"; } lis[i].onmouseout = function () { this.className = this.className.replace(new RegExp(" iehover\\b"), ""); } } } if (window.attachEvent) window.attachEvent("onload", navHover); function gotoURL(szURL) { if (szURL == "") return; window.open(szURL, 'Main', ''); } function SelectMenu(object, szURL) { for (var i = 0; i < document.all.length; i++) { if (document.all(i).className == "SelectedMenuLevel2") document.all(i).className = "MenuLevel2" else if (document.all(i).className == "SelectedMenuLevel1") document.all(i).className = "MenuLevel1" } if (object.className == "MenuLevel2") object.className = "SelectedMenuLevel2"; else if (object.className == "MenuLevel1") object.className = "SelectedMenuLevel1"; gotoURL(szURL); } function resizeMenu() { if (Menu.style.display == '') { Menu.style.display = 'none'; resizeIcon_Show.style.display = 'none'; resizeIcon_Hidden.style.display = ''; top.Bottom.cols = '7,*'; } else { Menu.style.display = ''; resizeIcon_Show.style.display = ''; resizeIcon_Hidden.style.display = 'none'; top.Bottom.cols = '180,*'; } } --> </script> </head> <body> <table height="100%" cellspacing="0" cellpadding="0" border="0"> <tr valign="top"> <td id="Menu" style="width: 180"> <!--**--> <table height="100%" width="100%" border="0" cellspacing="0" cellpadding="0"> <tr valign="top"> <td valign="middle" align="center" background="../images/Desk/ResizeBg.gif" style="width: 7px"> </td> <td> <ul id="navmenu"> <%= _menu %> </ul> </td> </tr> </table> </td> <td valign="middle" align="center" background="../images/Desk/ResizeBg.gif" style="width: 7px"> <span id="resizeIcon_Show" style="cursor: hand" onclick="javascript:resizeMenu()" title="隐藏菜单"> <img src="../images/Desk/Resize_Hidden.gif" width="7" height="48"></span> <span id="resizeIcon_Hidden" style="display: none; cursor: hand" onclick="javascript:resizeMenu()" title="显示菜单"> <img src="../images/Desk/Resize_Show.gif" width="7" height="48"></span> </td> </tr> </table> <script language="javascript" event="oncontextmenu" for="document"> if (!event.ctrlKey) return false; </script> </body> </html>
后台代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data.SqlClient; using System.Data; using System.Text; namespace AccordMenu { public partial class common_menu : System.Web.UI.Page { protected void Page_Load(object sender, System.EventArgs e) { //try //{ // string CheckSessionStr = Session["id"].ToString(); //} //catch //{ // Response.Write("<script language=javascript>alert('请登录');top.location='../index.aspx'</script>"); //} if (!IsPostBack) { ListMenu(); } } protected string _menu = string.Empty; public void ListMenu() { StringBuilder sb = new StringBuilder(); DataTable _list = new DataTable(); string ConctionStr = "Data Source=127.0.0.1;Initial Catalog=AccordMenu;Integrated Security=False;User ID=sa;Password=sa"; using (SqlConnection conec = new SqlConnection(ConctionStr)) { conec.Open(); string SqlText = "SELECT * FROM sys_menu"; SqlCommand Comand = new SqlCommand(SqlText, conec); SqlDataAdapter Adaper = new SqlDataAdapter(Comand); Adaper.Fill(_list); Adaper.Dispose(); Comand.Dispose(); conec.Close(); } DataRow[] rows = _list.Select("ParentID=0"); foreach (DataRow dr in rows) { string id = dr["ID"].ToString(); string name = dr["MenuName"].ToString(); sb.AppendFormat("<li ID=\"{2}\"><a href=\"javascript:;\" onclick=\"gotoURL('{0}');\">{1}</a>\r\n", dr["Menu_URL"].ToString(), name, id);//href可以写需要的链接地址 sb.Append(GetSubMenu(id, _list)); sb.Append("</li>\r\n"); } _menu = sb.ToString(); } /// <summary> /// 递归调用生成无限级别 /// </summary> /// <param name="pid"></param> /// <param name="dt"></param> /// <returns></returns> private string GetSubMenu(string pid, DataTable dt) { StringBuilder sb = new StringBuilder(); DataRow[] rows = dt.Select("ParentID=" + pid); sb.Append("<ul>\r\n"); foreach (DataRow dr in rows) { string id = dr["ID"].ToString(); string name = dr["MenuName"].ToString(); sb.AppendFormat("<li ID=\"{2}\"><a href=\"javascript:;\" onclick=\"gotoURL('{0}');\">{1}</a>\r\n", dr["Menu_URL"].ToString(), name, id);//href可以写需要的链接地址 sb.Append(GetSubMenu(id, dt)); //递归 sb.Append("</li>\r\n"); } sb.Append("</ul>\r\n"); return sb.ToString(); } } }
