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C++ Programmer's Cookbook

在Form中構(gòu)建給定目錄的Treeview

using ?System;

using ?System.IO;

using ?System.Drawing;

using ?System.Collections;

using ?System.ComponentModel;

using ?System.Windows.Forms;

using ?System.Data;

namespace ?WindowsApplication

{

???? /// ? <summary>

???? /// ?Summary?description?for?Form1.

???? /// ? </summary>

???? public ? class ?Form1?:?System.Windows.Forms.Form

???? {

???????? private ?System.Windows.Forms.TreeView?treeView1;

???????? /// ? <summary>

???????? /// ?Required?designer?variable.

???????? /// ? </summary>

???????? private ?System.ComponentModel.Container?components? = ? null ;

???????? public ?Form1()

???????? {

???????????? //

???????????? // ?Required?for?Windows?Form?Designer?support

???????????? //

????????????InitializeComponent();

???????????? //

???????????? // ?TODO:?Add?any?constructor?code?after?InitializeComponent?call

???????????? //

????????????Text? = " my?explore " ;

????????}

???????? /// ? <summary>

???????? /// ?Clean?up?any?resources?being?used.

???????? /// ? </summary>

???????? protected ? override ? void ?Dispose(? bool ?disposing?)

???????? {

???????????? if (?disposing?)

???????????? {

???????????????? if ?(components? != ? null )?

???????????????? {

????????????????????components.Dispose();

????????????????}

????????????}

???????????? base .Dispose(?disposing?);

????????}

???????? Windows?Form?Designer?generated?code

???????? private ? void ?Fill(TreeNode?dirNode)?

???????? {

????????????DirectoryInfo?dir? = ? new ?DirectoryInfo(dirNode.FullPath);

????????????

???????????? // ?An?exception?could?be?thrown?in?this?code?if?you?don't

???????????? // ?have?sufficient?security?permissions?for?a?file?or?directory.

???????????? // ?You?can?catch?and?then?ignore?this?exception.

???????????? foreach ?(DirectoryInfo?dirItem? in ?dir.GetDirectories())?

???????????? {

???????????????? // ?Add?node?for?the?directory.

????????????????TreeNode?newNode? = ? new ?TreeNode(dirItem.Name);

????????????????dirNode.Nodes.Add(newNode);

????????????????newNode.Nodes.Add( " * " );

????????????}

????????}

???????? /// ? <summary>

???????? /// ?The?main?entry?point?for?the?application.

???????? /// ? </summary>

????????[STAThread]

???????? static ? void ?Main()?

???????? {

????????????Application.Run( new ?Form1());

????????}

???????? private ? void ?Form1_Load( object ?sender,?System.EventArgs?e)

???????? {

???????????? // ?Set?the?first?node.

????????????TreeNode?rootNode? = ? new ?TreeNode( " C:\\ " );

????????????treeView1.Nodes.Add(rootNode);

???????????? // ?Fill?the?first?level?and?expand?it.

????????????Fill(rootNode);

????????treeView1.Nodes[ 0 ].Expand();

????????}

???????? private ? void ?treeView1_BeforeExpand( object ?sender,?System.Windows.Forms.TreeViewCancelEventArgs?e)

???????? {

???????????? // ?If?a?dummy?node?is?found,?remove?it?and?read?the?

???????????? // ?real?directory?list.

???????????? if ?(e.Node.Nodes[ 0 ].Text? == ? " * " )?

???????????? {

????????????????e.Node.Nodes.Clear();

????????????????Fill(e.Node);

????????????}

????????}

????}

}

posted on 2006-03-23 17:15 夢(mèng)在天涯閱讀(521) 評(píng)論(0) 編輯收藏引用所屬分類: C#/.NET

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C++ Programmer's Cookbook

在Form中構(gòu)建給定目錄的Treeview

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