asp.net手动填充TreeView生成树
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; }
