VS2005中动态生成树状菜单

2008-03-15 08:06:09

　标签：.net 开发动态树状菜单　　　[推送到技术圈]

一个像CSDN一样的树型菜单导航，用的是VS2005自带的TreeView控件。主要代码是生成树的递归函数。

后台代码：

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

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

{

SqlConnection Conn = new SqlConnection("server=OEM-MICRO;database=Test;uid=user;pwd=");

DataSet ds;

protected void Page_Load(object sender, EventArgs e)

{

Conn.Open();

this.createDataSet();

Conn.Close();

this.InitTree(tvMenu.Nodes, "0");

}

private DataSet createDataSet()

{

ds = new DataSet();

string sqlStr = "select * from Tree ";

SqlDataAdapter cmdSelect = new SqlDataAdapter(sqlStr, Conn);

cmdSelect.Fill(ds, "Tree");

return ds;

}

protected void InitTree(TreeNodeCollection Nds, string parentId)//用递归方法动态生成节点

{

DataView dv = new DataView();

TreeNode tmpNode;

dv.Table = ds.Tables["Tree"];

dv.RowFilter = "ParentId=" + "'" + parentId + "'";

foreach (DataRowView drv in dv)

{

tmpNode = new TreeNode();

tmpNode.Value = drv["Id"].ToString();

tmpNode.Text = drv["Name"].ToString();

tmpNode.NavigateUrl = "#";

Nds.Add(tmpNode);

this.InitTree(tmpNode.ChildNodes, tmpNode.Value);

}

页面代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<asp:TreeView ID="tvMenu" runat="server" ImageSet="Faq" ShowLines="True" ExpandDepth="0" Target="middle" >

<NodeStyle Font-Names="Tahoma" Font-Size="8pt" ForeColor="DarkBlue" HorizontalPadding="5px"

NodeSpacing="0px" VerticalPadding="0px" />

</asp:TreeView>

</div>

</form>

</body>

</html>

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