Question

如何动态添加TreeView子节点，有点伸手党了

Answer 1

string[] s = new string[] { "aaa", "bbb", "ccc", "ddd", "eee" };
treeView1.Nodes.Add(s[0]);
TreeNode tn = treeView1.Nodes[0];
foreach (var item in s.Skip(1))
{
tn.Nodes.Add(item);
tn = tn.Nodes[0];
}

Answer 2

我也做一回拷贝党。。。

 遍历某路径下的文件夹添加父节点，遍历文件夹下的文件添加子节点
 
 private void button1_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fd = new FolderBrowserDialog();
            if (fd.ShowDialog() == DialogResult.OK)
            {
                // 在此添加代码,选择的路径为 folderBrowserDialog1.SelectedPath
                if (Directory.Exists(fd.SelectedPath))
                {
                    DirectoryInfo thisOne = new DirectoryInfo(fd.SelectedPath);
                    DirectoryInfo[] directoryInfo = thisOne.GetDirectories();
                    for (int i = 0; i < directoryInfo.Length; i++)
                    {
                        TreeNode root = new TreeNode(directoryInfo[i].ToString());//创建节点
                        root.Name = directoryInfo[i].ToString(); //为节点取个名字,这儿创建的是根节点
                        root.Tag = 0;
                        treeView1.Nodes.Add(root);               //将节点添加到treeView1上
                        DirectoryInfo thisTwo = new DirectoryInfo(fd.SelectedPath + "\\" + directoryInfo[i].ToString());
                        FileInfo[] fileInfo = thisTwo.GetFiles();
                        for (int j = 0; j < fileInfo.Length; j++)
                        {
                            TreeNode node = new TreeNode(fileInfo[j].ToString());
                            node.Tag = 1;
                            node.Name = fileInfo[j].ToString();
                            if (!root.Nodes.ContainsKey(node.Name))
                            {
                                root.Nodes.Add(node);
                            }
                        }
                    }
                }
            }
        }