在VS 2005中使用TREEVIEW控件

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以下特把实现代码贴出来，供大家参考。

.ASPX页面代码：

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

<title>Untitled Page</title>

</head>

<body>

<asp:TreeView ID="LeftTree" runat="server" ShowLines="True" Font-Size="10pt">

</asp:TreeView>

</form>

</body>

</html>

以下是.ASPX.CS代码页面源码：

using System;

using System.Data;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Data.OleDb;

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

{

protected void Page_Load(object sender, EventArgs e)

{

if (!Page.IsPostBack)

{

InitTree();

}

// 递归绑定同一个表数据

private void InitTree()

{

DataTable dt = GetTreeViewTable();

DataView dv = new DataView(dt);

dv.RowFilter = "TreeParentID='0'";

foreach (DataRowView drv in dv)

{

TreeNode node = new TreeNode();

node.Text = drv["TreeName"].ToString();

node.Value = drv["TreeValue"].ToString();

node.ImageUrl = drv["TreeIco"].ToString();

node.Expanded = true;

LeftTree.Nodes.Add(node);

AddReplies(dt,node);

}

private DataTable GetTreeViewTable()

{

string constring = System.Configuration.ConfigurationSettings.AppSettings["OledbConnectionStr"];

OleDbConnection con = new OleDbConnection(constring);

OleDbDataAdapter da = new OleDbDataAdapter("SELECT * FROM TreeTb", con);

DataTable dt = new DataTable();

da.Fill(dt);

return dt;

}

private void AddReplies(DataTable dt, TreeNode node)

{

DataView dv = new DataView(dt);

dv.RowFilter = "TreeParentID='" + node.Value + "'";

foreach (DataRowView row in dv)

{

TreeNode replyNode = new TreeNode();

replyNode.Text = row["TreeName"].ToString();

replyNode.Value = row["TreeValue"].ToString();

replyNode.ImageUrl = row["TreeIco"].ToString();

replyNode.NavigateUrl = row["TreeLink"].ToString().Trim();

replyNode.Target = row["TargetStr"].ToString().Trim();

replyNode.Expanded = false;

node.ChildNodes.Add(replyNode);

AddReplies(dt,replyNode);

}

数据库表的设计说明：

表：TreeTb（菜单树）

字段名

用途

数据类型说明

允许为空

备注

自动ID

Int 4

TreeParentID

一级菜单树

Nchar 20

√

TreeValue

二级树非显值

Nchar 20

√

TreeName

二级树显示值

Nchar 20

√

TreeLink

菜单链接

Varchar 50

√

TargetStr

链接目标

Nchar 20

√

TreeIco

图标

Varchar 50

√