选项1：递归方法：
private void ListDirectory(TreeView treeView, string path){ treeView.Nodes.Clear(); var rootDirectoryInfo = new DirectoryInfo(path); treeView.Nodes.Add(CreateDirectoryNode(rootDirectoryInfo));}private static TreeNode CreateDirectoryNode(DirectoryInfo directoryInfo){ var directoryNode = new TreeNode(directoryInfo.Name); foreach (var directory in directoryInfo.GetDirectories()) directoryNode.Nodes.Add(CreateDirectoryNode(directory)); foreach (var file in directoryInfo.GetFiles()) directoryNode.Nodes.Add(new TreeNode(file.Name)); return directoryNode;}选项＃2：非递归方法：
private static void ListDirectory(TreeView treeView, string path){ treeView.Nodes.Clear(); var stack = new Stack<TreeNode>(); var rootDirectory = new DirectoryInfo(path); var node = new TreeNode(rootDirectory.Name) { Tag = rootDirectory }; stack.Push(node); while (stack.Count > 0) { var currentNode = stack.Pop(); var directoryInfo = (DirectoryInfo)currentNode.Tag; foreach (var directory in directoryInfo.GetDirectories()) { var childDirectoryNode = new TreeNode(directory.Name) { Tag = directory }; currentNode.Nodes.Add(childDirectoryNode); stack.Push(childDirectoryNode); } foreach (var file in directoryInfo.GetFiles()) currentNode.Nodes.Add(new TreeNode(file.Name)); } treeView.Nodes.Add(node);}
