C# 递归查找树状目录实现方法

 public partial class Form1 : Form    {        string path = @"F:\学习文件";//递归查找树状目录        public Form1()        {递归查找树状目录            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            LoadTree(path);        }

 public void LoadTree(string path, TreeNode node=null)

        {           

string[] dirs = Directory.GetDirectories(path);//获取子目录

            foreach (string dir in dirs)

            {

                  TreeNode node1 = new TreeNode(Path.GetFileName(dir));

                //TreeNode node1 = new TreeNode(dir);//文件所有路径

                if (node == null)

                {

                    treeView1.Nodes.Add(node1);

                }

                else

                {

                    node.Nodes.Add(node1);

                }

 if (Directory.GetDirectories(dir).Length > 0)                {                    LoadTree(dir, node1);                }            }        }    }}