Dynamic menu for .net

 

c# code:   
 protected void Page_Load(object sender, EventArgs e)

    {

        if (!Page.IsPostBack)

        {

            this.lbl_Menu.Text = GetMenu("9999","999");

            this.lbl_UserName.Text = "Tim";

            this.lbl_MacIP.Text = Page.Request.UserHostAddress;

        }

    }



    private string GetMenu(string UserID, string TopMenuID)

    {

        System.Data.DataSet ds = GetMenuDataSet(UserID);

        System.Text.StringBuilder sb = new System.Text.StringBuilder();

        sb.Append("<ul class='topnav'>");

        if (ds.Tables.Count != 0 && ds.Tables[0].Rows.Count != 0)

        {

            System.Data.DataView dv = ds.Tables[0].DefaultView;

            dv.RowFilter = "MenuUppID='999'";

            System.Data.DataTable dt = dv.ToTable();

            for (int i = 0; i < dt.Rows.Count; i++)

            {

                System.Data.DataRow dr = dt.Rows[i];

                sb.Append("<li><a href='" + (dr[2] != null ? dr[2].ToString() : "") + "'>" +

                    (dr[1] != null ? dr[1].ToString() : "") + "</a>");



                string subString = getSubMenu(dr[0].ToString(), dv);

                if (subString != "")

                {

                    sb.Append(subString);

                }



            }

        }

        sb.Append("</ul>");

        return sb.ToString();

    }



    private string getSubMenu(string MenuUppID,System.Data.DataView dv)

    {

        System.Text.StringBuilder sb = new System.Text.StringBuilder();

        dv.RowFilter = "MenuUppID='" + MenuUppID + "'";

        System.Data.DataTable dt = dv.ToTable();

        if (dt.Rows.Count != 0)

        {

            sb.Append("<ul style=\"display: none;\" class=\"subnav\">");

        }

        for (int i = 0; i < dt.Rows.Count; i++)

        {

            System.Data.DataRow dr = dt.Rows[i];

            sb.Append("<li><a href='" + (dr[2] != null ? dr[2].ToString() : "") + "'>" +

                (dr[1] != null ? dr[1].ToString() : "") + "</a>");

        }

        if (sb.Length != 0)

        {

            sb.Append("</ul>");

        }

        return sb.ToString();

    }



    private System.Data.DataSet GetMenuDataSet(string userID)

    {

        System.Data.DataSet ds = new System.Data.DataSet();

        System.Data.DataTable dt = new System.Data.DataTable();

        dt.Columns.Add("ID");

        dt.Columns.Add("MenuName");

        dt.Columns.Add("MenuUrl");

        dt.Columns.Add("MenuUppID");

        dt.Columns.Add("MenuSort");



        System.Data.DataRow dr = dt.NewRow();

        

        dr[0] = "0";

        dr[1] = "首页";

        dr[2] = "index.htm";

        dr[3] = "999";

        dr[4] = "1";



        dt.Rows.Add(dr);



        System.Data.DataRow dr1 = dt.NewRow();



        dr1[0] = "1";

        dr1[1] = "信息中心";

        dr1[2] = "a.htm";

        dr1[3] = "999";

        dr1[4] = "1";



        dt.Rows.Add(dr1);



        System.Data.DataRow dr2 = dt.NewRow();



        dr2[0] = "2";

        dr2[1] = "信息查询";

        dr2[2] = "a1.htm";

        dr2[3] = "1";

        dr2[4] = "2";



        dt.Rows.Add(dr2);



        System.Data.DataRow dr3 = dt.NewRow();



        dr3[0] = "3";

        dr3[1] = "信息修改";

        dr3[2] = "a2.htm";

        dr3[3] = "1";

        dr3[4] = "3";



        dt.Rows.Add(dr3);



        System.Data.DataRow dr4 = dt.NewRow();



        dr4[0] = "4";

        dr4[1] = "个人信息";

        dr4[2] = "a3.htm";

        dr4[3] = "999";

        dr4[4] = "4";



        dt.Rows.Add(dr4);



        System.Data.DataRow dr5 = dt.NewRow();



        dr5[0] = "5";

        dr5[1] = "网上";

        dr5[2] = "a3.htm";

        dr5[3] = "999";

        dr5[4] = "5";



        dt.Rows.Add(dr5);



        ds.Tables.Add(dt);

        return ds;

    }

    <style type="text/css">

        body {

	        margin: 0; padding: 0;

	        font: 10px normal Arial, Helvetica, sans-serif;

	        background: #ddd url(Images/body_bg.gif) repeat-x;

        }

        .container {

	        width: 960px;

	        margin: 0 auto;

	        position: relative;

        }

        ul.topnav li {

	        float: left;

	        margin: 0;	

	        padding: 0 15px 0 0;

	        position: relative; /*--Declare X and Y axis base--*/

	        

        }

        ul.topnav li a{

	        padding: 10px 5px;

	        color: #fff;

	        display: block;

	        text-decoration: none;

	        float: left;

        }

        ul.topnav li a:hover{

	        background: url(Images/topnav_hover.gif) no-repeat center top;

        }

        ul.topnav li span { /*--Drop down trigger styles--*/

	        width: 17px;

	        height: 35px;

	        float: left;

	        background: url(Images/subnav_btn.gif) no-repeat center top;

        }

        ul.topnav li span.subhover {background-position: center bottom; cursor: pointer;}

        ul.topnav li ul.subnav {

	        list-style: none;

	        position: absolute; /*--Important - Keeps subnav from affecting main navigation flow--*/

	        left: 0; top: 35px;

	        background: #333;

	        margin: 0; padding: 0;

	        display: none;

	        float: left;

	        width: 170px;

	        border: 1px solid #111;

        }

        ul.topnav li ul.subnav li{

	        margin: 0; padding: 0;

	        border-top: 1px solid #252525; /*--Create bevel effect--*/

	        border-bottom: 1px solid #444; /*--Create bevel effect--*/

	        clear: both;

	        width: 170px;

        }

        html ul.topnav li ul.subnav li a {

	        float: left;

	        width: 145px;

	        

	        padding-left: 20px;

        }

        html ul.topnav li ul.subnav li a:hover { /*--Hover effect for subnav links--*/

	        background: #222 url(Images/dropdown_linkbg.gif) no-repeat 10px center; 

        }

    </style>

<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>

<script type="text/javascript">

        $(document).ready(function () {

            $("ul.subnav").parent().append("<span></span>");

            $("ul.topnav li span").click(function () { 

                $(this).parent().find("ul.subnav").slideDown('fast').show();

                $(this).parent().hover(function () {

                }, function () {

                    $(this).parent().find("ul.subnav").slideUp('slow'); 

                });

            }).hover(function () {

                $(this).addClass("subhover"); 

            }, function () { 

                $(this).removeClass("subhover"); 

            });

        });

    </script>

<div class="container">

        <div id="topbanel" style="background: #ddd url(Images/body_bg.gif) repeat-x; height:102px">

            

        </div>



        <div id="header">

            <asp:Label runat="server" Text="" ID="lbl_Menu"></asp:Label>

        </div>

    </div>



    <div >

        <div>欢迎您！<asp:Label ID="lbl_UserName" runat="server"></asp:Label>   您的IP：<asp:Label ID="lbl_MacIP" runat="server"></asp:Label></div>

    </div>