使用文件系统目录结构填充TreeView

小编典典

使用文件系统目录结构填充TreeView

我在这里是Nodes的新手.. :)我想出了这个算法，但是它只显示父节点的列表..像这样..

a
   a.txt
   b
   c
c
   m
   n
b
   o
   p
etc...

我希望下一个节点将被放置在上一个节点内的一个节点中..所以它将像这样出现。

a
   a.txt
   b
      o
      p
   c
      m
      n
etc...

我有一些想法，但我可以将其实现为代码.. :)任何帮助。

private void ListDirectory(TreeView treeView, String path)
{            
    Stack<string> stack = new Stack<string>();
    TreeNode DirFilesCollection = new TreeNode();

    stack.Push(path);

    while (stack.Count > 0)
    {
        string dir = stack.Pop();
        try
        {
            List<String> parentDir = new List<string>();
            parentDir.AddRange(Directory.GetFiles(dir, "*.*"));
            parentDir.AddRange(Directory.GetDirectories(dir));

            DirectoryInfo d = new DirectoryInfo(dir);
            TreeNode TParent = new TreeNode(d.Name);

            foreach (String s in parentDir)
            {
                FileInfo f = new FileInfo(s);
                TreeNode subItems = new TreeNode(f.Name);

                TParent.Nodes.Add(subItems);
            }

            DirFilesCollection.Nodes.Add(TParent);

            foreach (string dn in Directory.GetDirectories(dir))
            {
                stack.Push(dn);
            }
        }
        catch
        {}
    }

    Action clearTreeView = () => treeView.Nodes.Clear();
    this.Invoke(clearTreeView);

    Action showTreeView = () => treeView.Nodes.Add(DirFilesCollection);
    this.Invoke(showTreeView);
}

阅读 509

2020-05-19

共1个答案

小编典典

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);
}

2020-05-19