private void button1_Click(object sender, EventArgs e)
???????{
???????????DialogResult dialogResult = folderBrowserDialog1.ShowDialog();
???????????if (dialogResult == DialogResult.OK)
???????????{
???????????????DirectoryInfo directoryInfos = new DirectoryInfo(folderBrowserDialog1.SelectedPath);
???????????????TreeNode treeNode = new TreeNode();
???????????????treeNode.Text = directoryInfos.Name;
???????????????treeView1.Nodes.Add(treeNode);
???????????????Tree(treeNode, directoryInfos);
???????????}
???????}
???????public void Tree(TreeNode treeNode, DirectoryInfo directoryInfo)
???????{
???????????DirectoryInfo[] directoryInfos = directoryInfo.GetDirectories();
???????????foreach (DirectoryInfo item in directoryInfos)
???????????{
???????????????TreeNode tree = new TreeNode();
???????????????tree.Text = item.Name;
???????????????treeNode.Nodes.Add(tree);
???????????????FileInfo[] fileInfos = item.GetFiles();
???????????????if (fileInfos != null)
???????????????{
???????????????????foreach (var items in fileInfos)
???????????????????{
???????????????????????TreeNode tr = new TreeNode();
???????????????????????tr.Text = items.Name;
???????????????????????tree.Nodes.Add(tr);
???????????????????}
???????????????}
???????????????Tree(tree, item);
???????????}
???????}
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原文地址：https://www.cnblogs.com/LYYXXXX/p/10386134.html