IO文件管理系统

enum DriverImage
    {
        CDRom = 0,
        Disk = 1,
        USB = 2,
        Folder = 3

    }
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            this.AutoSizeMode = AutoSizeMode.GrowAndShrink;
            this.Left = Screen.PrimaryScreen.WorkingArea.Width / 2 - this.Width / 2;
            this.Top = Screen.PrimaryScreen.WorkingArea.Height / 2 - this.Height / 2;
        }
        private void initTreeMain()
        {
            //光驱
            DriveInfo[] driveList = DriveInfo.GetDrives();
            foreach (DriveInfo item in driveList)
            {
                TreeNode driverNode = null;
                switch (item.DriveType)
                {
                    case DriveType.Removable:  //可移动磁盘
                        driverNode = SetDriverNode(item, (int)DriverImage.USB);
                        break;
                    case DriveType.Fixed:    //硬盘
                        driverNode = SetDriverNode(item, (int)DriverImage.Disk);
                        break;
                    case DriveType.CDRom: //光盘
                        driverNode = SetDriverNode(item, (int)DriverImage.CDRom);
                        break;
                    default:
                        break;
                }
            }
            //根据上面的节点寻找目录
            foreach (TreeNode node in treeMain.Nodes)
            {
                if (node.Tag.ToString() == "E:\\")
                {
                    LoadTreeNodes(node);
                }
            }

        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="item">根据item设置节点信息</param>
        /// <param name="imageType">节点的图片索引类型</param>
        /// <returns></returns>
        TreeNode SetDriverNode(DriveInfo item, int imageType)
        {
            TreeNode driverNode = treeMain.Nodes.Add(item.VolumeLabel + "(" + item.Name.Split('\\')[0] + ")");
            driverNode.ImageIndex = imageType;
            driverNode.SelectedImageIndex = imageType;
            driverNode.Tag = item.RootDirectory;
            return driverNode;
        }
        /// <summary>
        /// 绑定根节点中的文件夹
        /// </summary>
        /// <param name="node">根节点</param>
        void LoadTreeNodes(TreeNode node)
        {
            DirectoryInfo directory = new DirectoryInfo(node.Tag.ToString());
            DirectoryInfo[] infos = directory.GetDirectories();
            foreach (DirectoryInfo info in infos)
            {
                //如果找到是隐藏，临时，系统。 则后面不执行。重新开始寻找

                if (info.Attributes == FileAttributes.Hidden || info.Attributes == FileAttributes.Temporary || info.Attributes == FileAttributes.System)
                {
                    continue;
                }
                if (info.Attributes == FileAttributes.Directory)
                {
                    TreeNode childNode = node.Nodes.Add(info.Name);
                    childNode.ImageIndex = (int)DriverImage.Folder;
                    childNode.SelectedImageIndex = (int)DriverImage.Folder;
                    childNode.Tag = info.FullName;
                    LoadChildNodes(childNode);
                }
            }
        }
        //使用递归依次寻找其下
        void LoadChildNodes(TreeNode node)
        {
            DirectoryInfo directory = new DirectoryInfo(node.Tag.ToString());
            if (directory.FullName.Length > 240)
            {
                return;
            }
            DirectoryInfo[] infos = directory.GetDirectories();
            foreach (DirectoryInfo info in infos)
            {
                TreeNode childNode = node.Nodes.Add(info.Name);
                childNode.ImageIndex = (int)DriverImage.Folder;
                childNode.SelectedImageIndex = (int)DriverImage.Folder;
                childNode.Tag = info.FullName;
                LoadChildNodes(childNode);
            }
        }