最近在做项目发现需要用到树的地方，页面的前台任然是使用一个asp.net的控件TreeView来显示树的结构，当然也可以自己在前台写一个树来展示，这在后期跟局功能的不同很大可能会要用到异步的知识，废话不多说，贴代码：
首先前台：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="txl.aspx.cs" Inherits="web.txl" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<link href="Styles/basic.css" rel="stylesheet" type="text/css" />
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
</head>
<body>
<form id="form1" runat="server">
<asp:TreeView ID="tvw" runat="server" CssClass="">
</asp:TreeView>
</form>
</body>
后台代码:
/// <summary>
/// 绑定TreeView节点
/// </summary>
private void BindTreeView()
{
//从数据读取出父节点的数据var fzmodel = new BLL_Wdgl_txlfz().GetModelList(" txlid=" + txlmodel.id.ToString());
foreach (var item in fzmodel)
{
TreeNode parentNode = new TreeNode();
parentNode.Text = item.fzmc.ToString();
parentNode = BindParent(item.id, parentNode);
tvw.Nodes.Add(parentNode);
}
} /// <summary>
/// 给TreeView绑定子节点
/// </summary>
/// <param name="fzid">分组id</param>
/// <param name="parentNode">父节点</param>
/// <returns>返回整个父节点</returns>
private TreeNode BindParent(long fzid, TreeNode parentNode)
{
//在数据库中根据传递过来的父节点的ID找出子节点的集合填充到parentNode中
var cymodel = new BLL_Wdgl_txlcy().GetModelList(" fzid=" + fzid);
foreach (var item in cymodel)
{
TreeNode childnode = new TreeNode();
childnode.Text = item.mc.Trim();
parentNode.ChildNodes.Add(childnode);
}
return parentNode;
}