TreeView(递归)

很简单，不多说
最终效果：

数据库(Access):

代码：

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
        <div style="text-align:center;">
            <div style="margin:5px; float:left;"><asp:TreeView runat="server" ID="Tree1"></asp:TreeView></div>
            <div style="margin-left:12px;"><asp:GridView runat="server" ID="GridView1"></asp:GridView></div>
        </div> 
    </form>
</body>
</html>

public partial class InfoSort : System.Web.UI.Page
    {
        DataSet ds = null;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindData();
                loadtree();
            }
        }
        private void loadtree()
        {
            Tree1.Nodes.Clear();
            ds = GetDataSet("SELECT * FROM sort");
            InitTree(Tree1.Nodes, 0);
        }
        private void InitTree(TreeNodeCollection Nds,int parentid)
        {
            DataView dv = new DataView();
            TreeNode tmpNd = null;
            dv.Table = ds.Tables[0];
            dv.RowFilter = String.Format("parentid={0}", parentid);
            foreach (DataRowView drv in dv)
            {
                tmpNd = new TreeNode();
                tmpNd.Text = (string)drv["sortname"];//节点名称
                tmpNd.NavigateUrl = String.Format("?id={0}", drv["id"]);//节点URL
                //tmpNd.ImageUrl = ""; //节点图片
                if (parentid == 0)
                    tmpNd.Expanded = true;
                else
                    tmpNd.Expanded = false;
                Nds.Add(tmpNd);
                InitTree(Nds[Nds.Count - 1].ChildNodes, (int)drv["id"]);
            }
        }
        private void BindData()
        {
            GridView1.DataSource = GetDataSet("select * from sort");
            GridView1.DataBind();
        }

        Dal
    }

posted on 2008-07-01 17:13  RedFox(低调)  阅读(8541)  评论(5)  编辑  收藏  举报

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