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【CSharp】仿资源浏览器

作者:zouyujie1127 / 发布于2015/2/28/ 972


	//仿资源浏览器
	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Text;
	using System.Windows.Forms;
	using System.IO;
	namespace TreeViewDemo
	{
	 public partial class Form1 : Form
	 {
	 public Form1()
	 {
	 InitializeComponent();
	 }
	 private void Form1_Load(object sender, EventArgs e)
	 {
	 //get all drives
	 DriveInfo[] drives = DriveInfo.GetDrives();
	
	 //show all drives in the tree
	 foreach (DriveInfo d in drives)
	 {
	 DirectoryInfo root = d.RootDirectory;
	 //create a root node
	 TreeNode node = new TreeNode();
	 node.Text = root.Name;
	 node.Tag = root;
	 treeView1.Nodes.Add(node);
	 node.Nodes.Add(new TreeNode());
	 }
	 }
	 private void treeView1_AfterExpand(object sender, TreeViewEventArgs e)
	 {
	 if (e.Action ==TreeViewAction.Expand)
	 {
	 DirectoryInfo parentFolder = (DirectoryInfo)e.Node.Tag;
	 //get all sub folders
	 DirectoryInfo[] folders = parentFolder.GetDirectories();
	 e.Node.Nodes.Clear();
	 //construct sub node
	 foreach (DirectoryInfo folder in folders)
	 {
	 TreeNode folderNode = new TreeNode();
	 folderNode.Text = folder.Name;
	 folderNode.Tag = folder;
	 e.Node.Nodes.Add(folderNode);
	 }
	 }
	 }
	 private void btnExpend_Click(object sender, EventArgs e)
	 {
	 //获取当前选中节点
	 TreeNode selectNode = this.treeView1.SelectedNode;
	 if (selectNode != null)
	 {
	 selectNode.Expand();
	 }
	 }
	 private void btnClose_Click(object sender, EventArgs e)
	 {
	 //获取当前选中节点
	 TreeNode selectNode = this.treeView1.SelectedNode;
	 if (selectNode != null)
	 {
	 selectNode.Collapse();
	 }
	 }
	 private void btnExpandAndCollapse_Click(object sender, EventArgs e)
	 {
	 TreeNode selectNode = this.treeView1.SelectedNode;
	 if (selectNode != null)
	 {
	 selectNode.Toggle();
	 }
	 }
	 private void btnAdd_Click(object sender, EventArgs e)
	 {
	 TreeNode selectNode = this.treeView1.SelectedNode;
	 if (selectNode != null)
	 {
	 selectNode.Nodes.Add(new TreeNode("新建文件夹"));
	 }
	 }
	 private void btnDelete_Click(object sender, EventArgs e)
	 {
	 TreeNode selectNode = this.treeView1.SelectedNode;
	 if (selectNode != null)
	 {
	 selectNode.Parent.Nodes.Remove(selectNode);
	 }
	 }
	 }
	}

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