.NET c#文件管理系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
namespace _03文件管理系统
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string rootRoad = @"G:\英莱特";//地址
        private void Form1_Load(object sender, EventArgs e)
        {
            //先获取根目录下面的所有文件夹名称
            string[] dirList = Directory.GetDirectories(rootRoad);
            //获取每个文件夹名称
            for (int i=0;i<dirList.Length;i++)
            {
                DirectoryInfo info = new DirectoryInfo(dirList[i]);
                string fileName = info.Name;
                TreeNode rootNode = new TreeNode(fileName);
                treeView1.Nodes.Add(rootNode);

                SetNode(info.FullName, rootNode);
            }
            ImageList image = new ImageList();
            image.Images.Add(Image.FromFile("1.png"));
            image.Images.Add(Image.FromFile("2.png"));
            treeView1.ImageList = image;
            treeView1.SelectedImageIndex = 1;
        }
        void SetNode(string fullRoad, TreeNode node)
        {
            string[] dirList = Directory.GetDirectories(fullRoad);

            for (int i=0;i<dirList.Length;i++)
            {
                DirectoryInfo info = new DirectoryInfo(dirList[i]);
                string fileName = info.Name;
                TreeNode rootNode = new TreeNode(fileName);
                node.Nodes.Add(rootNode);
                SetNode(info.FullName, rootNode);
            }
            string[] fileList = Directory.GetFiles(fullRoad);
            for (int i=0;i<fileList.Length;i++)
            {
                FileInfo info = new FileInfo(fileList[i]);
                string filename = info.Name;
                TreeNode rootNode = new TreeNode(filename);
                node.Nodes.Add(rootNode);
            }
        }
    }
}