C#加载整个硬盘目录到TreeView

作者:admin 日期:2007-12-25

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
//读写文件的名空间
using System.IO;
namespace 加载整个硬盘目录到TreeView
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        // 加载盘符
        private void EnumDrives(TreeNode ParentNode)
        {
            if (ParentNode.Nodes.Count == 0)
            {
                foreach (string drive in Directory.GetLogicalDrives())
                {
                    treeView1.SelectedNode = ParentNode;
                    TreeNode TempNode = new TreeNode();
                    TempNode.Text = drive.Substring(0, drive.Length - 1);
                    TempNode.Tag = drive;
                    TempNode.ImageIndex = 1;
                    TempNode.SelectedImageIndex = 1;
                    treeView1.SelectedNode.Nodes.Add(TempNode);
                    treeView1.SelectedNode.Nodes[treeView1.SelectedNode.Nodes.Count - 1].EnsureVisible();
                }
            }
        }
        // 递归实现加载目录
        private void EnumDirectories(TreeNode ParentNode)
        {
            treeView1.SelectedNode = ParentNode;
            string DirectoryPath = ParentNode.Tag.ToString();
            if (ParentNode.Nodes.Count == 0)
            {
                if (DirectoryPath.Substring(DirectoryPath.Length - 1) != @"")
                    DirectoryPath += @"";
                try
                {
                    foreach (string directory in Directory.GetDirectories(DirectoryPath))
                    {
                        TreeNode TempNode = new TreeNode();
                        TempNode.Text = directory.Substring(directory.LastIndexOf(@"") + 1);
                        TempNode.Tag = directory;
                        TempNode.ImageIndex = 3;
                        TempNode.SelectedImageIndex = 2;
                        treeView1.SelectedNode.Nodes.Add(TempNode);
                        treeView1.SelectedNode.Nodes[treeView1.SelectedNode.Nodes.Count - 1].EnsureVisible();
                    }
                }
                catch (Exception)
                {
                }
            }
        }
        //点击目录树时的事件
        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (e.Node.Text.ToString() != "我的电脑")
                EnumDirectories(e.Node);
            else
                EnumDrives(e.Node);
        }
    }
}

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