C#TreeView显示本地资源

最新推荐文章于 2019-06-13 09:14:11 发布

原创最新推荐文章于 2019-06-13 09:14:11 发布 · 520 阅读

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文章标签：

#string #exception #path #object #class

本文深入探索了如何使用C#编程语言通过Windows API接口来遍历计算机的文件系统，包括磁盘驱动器和目录结构的展示。通过实现树形视图控件，用户可以直观地浏览和操作本地计算机上的各种资源。

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.StartPosition = FormStartPosition.CenterScreen;
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            treeView1.SelectedNode = e.Node;
            if (treeView1.SelectedNode.Text == "我的电脑")
            {
                disDrivers(treeView1.SelectedNode);
            }
            else
            {
                disDirectories(treeView1.SelectedNode);
            }
        }

        private void disDrivers(TreeNode parentNode)
        {
            if (parentNode.Nodes.Count == 0)
            {
                foreach (string drive in Directory.GetLogicalDrives())
                {
                    TreeNode tn = new TreeNode();
                    tn.Text = drive.Substring(0, drive.Length - 1);
                    tn.ImageIndex = 1;
                    tn.SelectedImageIndex = 1;
                    tn.Tag = drive;
                    parentNode.Nodes.Add(tn);
                }
            }
        }

        private void disDirectories(TreeNode parentNode)
        {
            string path = parentNode.Tag.ToString();

            if (parentNode.Nodes.Count == 0)
            {
                try
                {
                    foreach (string directory in Directory.GetDirectories(path))
                    {
                        TreeNode tn = new TreeNode();
                        tn.Tag = directory;
                        tn.Text = directory.Substring(directory.LastIndexOf("//")+1);
                        tn.ImageIndex = 2;
                        tn.SelectedImageIndex = 3;
                        parentNode.Nodes.Add(tn);
                    }
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.Message);
                }
            }
        }
    }
}