如何显示一个TreeView目录？ [英] How to display directories in a TreeView?

问题描述

下面是我的代码

DirectoryInfo directoryInfo = new DirectoryInfo(@"C:\Users\Shahul\Documents\Visual Studio 2010\Projects\TreeView\TreeView\bin\FileExplorer");

private void Form1_Load(object sender, EventArgs e)
{
    if (Directory.Exists("FileExplorer"))
    {
        try
        {
            DirectoryInfo[] directories = directoryInfo.GetDirectories();

            foreach (FileInfo file in directoryInfo.GetFiles())
            {
                if (file.Exists)
                {
                    TreeNode nodes = treeView.Nodes[0].Nodes.Add(file.Name);
                }
            }

            if (directories.Length > 0)
            {
                foreach (DirectoryInfo directory in directories)
                {
                    TreeNode node = treeView.Nodes[0].Nodes.Add(directory.Name);
                    node.ImageIndex = node.SelectedImageIndex = 0;
                    foreach (FileInfo file in directory.GetFiles())
                    {
                        if (file.Exists)
                        {
                            TreeNode nodes = treeView.Nodes[0].Nodes[node.Index].Nodes.Add(file.Name);
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }
}

当我跑我只是得到一个空白的树状形式？无法弄清楚什么是错误？

When I run I just get a blank treeview form? Unable to figure out what is the error?

顺便说一下在堆栈溢出这是我的第一篇文章。

Btw this my first post in Stack Overflow.

推荐答案

这应该解决您的问题，我想在WinForm的，但：

This should solve your problem, I tried on WinForm though:

public Form1()
    {
        InitializeComponent();

        DirectoryInfo directoryInfo = new DirectoryInfo(@"C:\Users\hikuma\Documents\IR");
        if (directoryInfo.Exists)
        {
            treeView1.AfterSelect += treeView1_AfterSelect;
            BuildTree(directoryInfo, treeView1.Nodes);
        }
    }

    private void BuildTree(DirectoryInfo directoryInfo, TreeNodeCollection addInMe)
    {
        TreeNode curNode = addInMe.Add(directoryInfo.Name);

        foreach (FileInfo file in directoryInfo.GetFiles())
        {
            curNode.Nodes.Add(file.FullName, file.Name);
        }
        foreach (DirectoryInfo subdir in directoryInfo.GetDirectories())
        {
            BuildTree(subdir, curNode.Nodes);
        }
    }

    private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
    {
        if(e.Node.Name.EndsWith("txt"))
        {
            this.richTextBox1.Clear();
            StreamReader reader = new StreamReader(e.Node.Name);
            this.richTextBox1.Text = reader.ReadToEnd();
            reader.Close();
        }
    }

这是你如何打开文件的一个简单的例子丰富的文本框，它可以改善很多:)。
你可能要标记为答案或投票，如果它帮助:)！

It is a simple example of how you can open file in rich text box, it can be improved a lot :). You might want to mark as answer or vote up if it helped :) !!

这篇关于如何显示一个TreeView目录？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！