在左边的treeview树型的节点中，我任一节点，或取单击事件和在右边窗口中显示数据．数据从server中读取

节点是从数据库中动态读取．

我正在搞这个呢，可以交流一下，178169475

先AfterCheck，再递归遍历。

using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using
 
namespace DirectoryExplorerCS
{
    public partial class ExplorerForm : Form
    {
        public ExplorerForm()
        {
            InitializeComponent();
        }
 
        private void AddChildren(TreeNode parentNode)
        {
            DirectoryInfo dirInfo = (DirectoryInfo)parentNode.Tag;
 
            try
            {
                foreach (DirectoryInfo dir in dirInfo.GetDirectories())
                {
                    TreeNode node = new TreeNode();
                    node.Text = dir.Name;
                    node.Tag = dir;
                    parentNode.Nodes.Add(node);
                }
            }
            catch (Exception e)
            {
                //MessageBox.Show(e.ToString());
            }
        }
 
        private void ExplorerForm_Load(object sender, EventArgs e)
        {
            TreeNode rootNode = new TreeNode();
            rootNode.Text = "C:";
            rootNode.Tag = new DirectoryInfo("C:\\");
            directoryTree.Nodes.Add(rootNode);
            AddChildren(rootNode);
        }
 
        private void directoryTree_AfterExpand(object sender, TreeViewEventArgs e)
        {
            foreach (TreeNode node in e.Node.Nodes)
            {
                if (node.Nodes.Count == 0)
                {
                    AddChildren(node);
                }
            }
        }
 
        
        private void directoryTree_AfterSelect(object sender, TreeViewEventArgs e)
        {
            DirectoryInfo dirInfo = (DirectoryInfo)e.Node.Tag;
            detailListView.Items.Clear();
            try
            {
                foreach (DirectoryInfo childDir in dirInfo.GetDirectories())
                {
                    //largeImageList.Images.Add(Icon.ExtractAssociatedIcon(childDir.FullName));
                    ListViewItem item = new ListViewItem();
                    item.ImageIndex = 0;
                    item.Text = childDir.Name;
                    item.SubItems.Add("");  
                    item.SubItems.Add("文件夹");
                    item.SubItems.Add(childDir.LastWriteTime.ToString());
                    detailListView.Items.Add(item);
                }
            }
            catch
            {
            }
        }
 
           }
        }
    }
}

public void treeviewView()
        {
            //显示父节点
            string sql = "select * from Company_Infor";
            SqlDataAdapter adapter = new SqlDataAdapter(sql, conn.Link());
            DataSet resultDS = new DataSet();
            adapter.Fill(resultDS, "Company_Infor");
            foreach (DataRow row in resultDS.Tables["Company_Infor"].Rows)
            {
                sql = "select top 1 * from Company_Infor";
                adapter = new SqlDataAdapter(sql, conn.Link());
                adapter.Fill(resultDS, row["Company_Name"].ToString());
                TreeNode tn = new TreeNode();
                tn.Name = row["Company_ID"].ToString();
                tn.Text = row["Company_Name"].ToString();
                string companyid = row["Company_ID"].ToString();
 
                treeView1.Nodes.Add(tn);
 
 
                //部门子节点
                string sectionsql = "select * from Section_Infor";
                SqlDataAdapter sectionadapter = new SqlDataAdapter(sectionsql, conn.Link());
                DataSet sectionDS = new DataSet();
                sectionadapter.Fill(sectionDS, "Section_Infor");
 
                foreach (DataRow sectionrow in sectionDS.Tables["Section_Infor"].Rows)
                {
 
                    sectionsql = "select top 1 * from Section_Infor";
                    sectionadapter = new SqlDataAdapter(sectionsql, conn.Link());
                    sectionadapter.Fill(sectionDS, sectionrow["Section_Name"].ToString());
                    TreeNode sectn = new TreeNode();
                    sectn.Name = sectionrow["Section_ID"].ToString();
                    sectn.Text = sectionrow["Section_Name"].ToString();
 
                    string FKcompanyid = sectionrow["Company_ID"].ToString();
                    if (FKcompanyid == companyid)
                        tn.Nodes.Add(sectn);
                }
 
            }
            
  
        }
这个也许你有用  是加载的数据库中的字段  但代码你还要封装哈

说句。。4楼的谢了