简易文件管理器（C#）

效果如下：

将窗体 Form 的 Text 属性设置为“简易的文件管理器”。 

窗体上添加 SplitContainer、TreeView、ListView 控件，设置属性。将 TreeView 控

件的 Dock 属性设置为 Left，ListView 控件的 Dock 属性设置为 Fill,MultiSelect 属性设置为False，View 属性设置为 List。 

在 Form1.cs 中，添加对命名空间 using System.IO 的引用。

treeView放置在左边，ListView放置在右边

Form1.cs代码如下：

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 Net_4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            TreeNode myComputerNode = new TreeNode("我的电脑");
            treeView1.Nodes.Add(myComputerNode);
            listViewShow(myComputerNode);
        }

        //ListView 控件的方法 listViewShow(TreeNode dirNode)
        private void listViewShow(TreeNode dirNode)
        {
            listView1.Clear();
            if (dirNode.Parent == null)
            {
                foreach (string DrvName in Directory.GetLogicalDrives())
                {
                    ListViewItem aItem = new ListViewItem(DrvName);
                    listView1.Items.Add(aItem);
                }
            }
            else
            {
                foreach (string DirName in Directory.GetDirectories((string)dirNode.Tag))
                {
                    ListViewItem aItem = new ListViewItem(DirName);
                    listView1.Items.Add(aItem);
                }

                foreach (string fileName in Directory.GetFiles((string)dirNode.Tag))
                {
                    ListViewItem aItem = new ListViewItem(fileName);
                    listView1.Items.Add(aItem);
                }
            }
        }

        //listViewShow 的重载方法
        private void listViewShow(string dirName)
        {
            listView1.Clear();
            try
            {
                foreach (string DirName in Directory.GetDirectories(dirName))
                {
                    ListViewItem aItem = new ListViewItem(DirName);
                    listView1.Items.Add(aItem);
                }
                foreach (string fileName in Directory.GetFiles(dirName))
                {
                    ListViewItem aItem = new ListViewItem(fileName);
                    listView1.Items.Add(aItem);
                }
            }
            catch
            {
            }
        }

        private void DirTreeShow(TreeNode dirNode)
        {
            try
            {
                if (dirNode.Nodes.Count == 0)
                {
                    if (dirNode.Parent == null)
                    {
                        foreach (string DrvName in Directory.GetLogicalDrives())
                        {
                            TreeNode aNode = new TreeNode(DrvName);
                            aNode.Tag = DrvName;
                            dirNode.Nodes.Add(aNode);
                        }
                    }
                    else
                    {
                        foreach (string DirName in Directory.GetDirectories((string)dirNode.Tag))
                        {
                            TreeNode aNode = new TreeNode(DirName);
                            aNode.Tag = DirName;
                            dirNode.Nodes.Add(aNode);
                        }
                    }
                }
            }
            catch
            {
            }
        }

        private void splitContainer1_Panel1_Paint(object sender, PaintEventArgs e)
        {

        }

        private void splitContainer1_Panel2_Paint(object sender, PaintEventArgs e)
        {

        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            listViewShow(e.Node);
            DirTreeShow(e.Node);
        }

        private void listView1_DoubleClick(object sender, EventArgs e)
        {
            foreach (int listIndex in listView1.SelectedIndices)
            {
                listViewShow(listView1.Items[listIndex].Text);
            }
        } 
    }
}