Web/SmartTreeView.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
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.Collections.Generic;
using System.Text;

public partial class SmartTreeView : System.Web.UI.Page
{
    DataTable _dataTable = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            ShowTree();
        }
    }

    /// <summary>
    /// 显示TreeView
    /// </summary>
    void ShowTree()
    {
        stv1.Nodes.Clear();
        stv2.Nodes.Clear();

        InitTree();
        BindTree(stv1.Nodes, 0);
        BindTree2(stv2.Nodes, 0);

        stv1.ExpandAll();
        stv2.ExpandAll();
    }

    void InitTree()
    {
        OjbData obj = new OjbData();
        _dataTable = obj.GetHierarchy();
    }

    void BindTree(TreeNodeCollection nds, int parentId)
    {
        TreeNode tn = null;

        foreach (DataRow dr in _dataTable.Select("parentId=" + parentId))
        {
            tn = new TreeNode(dr["name"].ToString(), dr["id"].ToString());
            tn.ShowCheckBox = true;

            nds.Add(tn);

            BindTree(tn.ChildNodes, Convert.ToInt32(dr["id"]));