Csharp/C Sharp/GUI Windows Form/TreeView — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
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| |
Текущая версия на 11:32, 26 мая 2010
Содержание
- 1 Add Nodes to TreeView
- 2 Custom TreeView
- 3 Directory Tree Host
- 4 Drag and drop Tree Node
- 5 Get Selected Node Full Path
- 6 Read an XML Document and display the file as a Tree
- 7 Recursively load Directory info into TreeView
- 8 Subclass TreeView
- 9 TreeView Data Binding
- 10 TreeView Demo
- 11 TreeView Drag And Drop
- 12 TreeView Example
- 13 TreeView ImageIndex
Add Nodes to TreeView
using System;
using System.Drawing;
using System.Windows.Forms;
class SimpleTreeView: Form
{
public static void Main()
{
Application.Run(new SimpleTreeView());
}
public SimpleTreeView()
{
Text = "Simple Tree View";
TreeView tree = new TreeView();
tree.Parent = this;
tree.Dock = DockStyle.Fill;
tree.Nodes.Add("Animal");
tree.Nodes[0].Nodes.Add("A");
tree.Nodes[0].Nodes[0].Nodes.Add("A1");
tree.Nodes[0].Nodes[0].Nodes.Add("A2");
tree.Nodes[0].Nodes[0].Nodes.Add("A3");
tree.Nodes[0].Nodes.Add("B");
tree.Nodes[0].Nodes[1].Nodes.Add("B1");
tree.Nodes[0].Nodes[1].Nodes.Add("B2");
tree.Nodes[0].Nodes.Add("C");
tree.Nodes[0].Nodes[2].Nodes.Add("C1");
tree.Nodes[0].Nodes[2].Nodes.Add("C2");
tree.Nodes[0].Nodes[2].Nodes.Add("C3");
tree.Nodes.Add("D");
tree.Nodes[1].Nodes.Add("D1");
tree.Nodes[1].Nodes.Add("D2");
tree.Nodes[1].Nodes.Add("D3");
tree.Nodes.Add("E");
tree.Nodes[2].Nodes.Add("E1");
tree.Nodes[2].Nodes.Add("E2");
tree.Nodes[2].Nodes.Add("E3");
}
}
Custom TreeView
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace CustomTreeView
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class CustomTreeView : System.Windows.Forms.Form
{
internal System.Windows.Forms.ImageList imagesTree;
private ProjectTree tree;
private System.ruponentModel.IContainer components;
public CustomTreeView()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.ruponents = new System.ruponentModel.Container();
// System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(CustomTreeView));
this.imagesTree = new System.Windows.Forms.ImageList(this.ruponents);
this.tree = new ProjectTree();
this.SuspendLayout();
//
// imagesTree
//
this.imagesTree.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit;
this.imagesTree.ImageSize = new System.Drawing.Size(16, 16);
// this.imagesTree.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imagesTree.ImageStream")));
this.imagesTree.TransparentColor = System.Drawing.Color.Transparent;
//
// tree
//
this.tree.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.tree.ImageList = this.imagesTree;
this.tree.Location = new System.Drawing.Point(8, 4);
this.tree.Name = "tree";
this.tree.Nodes.AddRange(new System.Windows.Forms.TreeNode[] {
new System.Windows.Forms.TreeNode("Unassigned", 0, 0),
new System.Windows.Forms.TreeNode("In Progress", 1, 1),
new System.Windows.Forms.TreeNode("Closed", 2, 2)});
this.tree.Scrollable = false;
this.tree.Size = new System.Drawing.Size(320, 296);
this.tree.TabIndex = 0;
//
// CustomTreeView
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(336, 310);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.tree});
this.Name = "CustomTreeView";
this.Text = "ProjectUserTree";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new CustomTreeView());
}
private void Form1_Load(object sender, System.EventArgs e)
{
tree.AddProject("Migration to .NET", ProjectTree.StatusType.InProgress);
tree.AddProject("Revamp pricing site", ProjectTree.StatusType.Unassigned);
tree.AddProject("Prepare L-DAP feasibility report", ProjectTree.StatusType.Unassigned);
tree.AddProject("Update E201-G to Windows XP", ProjectTree.StatusType.Closed);
tree.AddProject("Annual meeting", ProjectTree.StatusType.Closed);
}
}
public class ProjectTree : TreeView
{
// Use an enumeration to represent the three types of nodes.
// Specific numbers correspond to the database field code.
public enum StatusType
{
Unassigned = 101,
InProgress = 102,
Closed = 103
}
// Store references to the three main node branches.
private TreeNode nodeUnassigned = new TreeNode("Unassigned", 0, 0);
private TreeNode nodeInProgress = new TreeNode("In Progress", 1, 1);
private TreeNode nodeClosed = new TreeNode("Closed", 2, 2);
// Add the main level of nodes when the control is instantiated.
public ProjectTree() : base()
{
base.Nodes.Add(nodeUnassigned);
base.Nodes.Add(nodeInProgress);
base.Nodes.Add(nodeClosed);
}
// Provide a specialized method the client can use to add nodes.
public void AddProject(string name, StatusType status)
{
TreeNode nodeNew = new TreeNode(name, 3, 4);
nodeNew.Tag = status;
switch (status)
{
case StatusType.Unassigned:
nodeUnassigned.Nodes.Add(nodeNew);
break;
case StatusType.InProgress:
nodeInProgress.Nodes.Add(nodeNew);
break;
case StatusType.Closed:
nodeClosed.Nodes.Add(nodeNew);
break;
}
}
}
public class ProjectUserTree : TreeView
{
// Use an enumeration to represent the three types of nodes.
public enum NodeType
{
Project,
User
}
// Define a new type of higher-level event for node selection.
public delegate void ItemSelectEventHandler(object sender,
ItemSelectEventArgs e);
public class ItemSelectEventArgs : EventArgs
{
public NodeType Type;
public DataRow ItemData;
}
// Define the events that use this signature and event arguments.
public event ItemSelectEventHandler UserSelect;
public event ItemSelectEventHandler ProjectSelect;
// Store references to the two main node branches.
private TreeNode nodeProjects = new TreeNode("Projects", 0, 0);
private TreeNode nodeUsers = new TreeNode("Users", 1, 1);
// Add the main level of nodes when the control is instantiated.
public ProjectUserTree() : base()
{
base.Nodes.Add(nodeProjects);
base.Nodes.Add(nodeUsers);
}
// Provide a specialized method the client can use to add projects.
// Store the corresponding DataRow.
public void AddProject(DataRow project)
{
TreeNode nodeNew = new TreeNode(project["Name"].ToString(), 2, 3);
nodeNew.Tag = project;
nodeProjects.Nodes.Add(nodeNew);
}
// Provide a specialized method the client can use to add users.
// Store the correspnding DataRow.
public void AddUser(DataRow user)
{
TreeNode nodeNew = new TreeNode(user["Name"].ToString(), 2, 3);
nodeNew.Tag = user;
nodeUsers.Nodes.Add(nodeNew);
}
// When a node is selected, retrieve the DataRow and raise the event.
protected override void OnAfterSelect(TreeViewEventArgs e)
{
base.OnAfterSelect(e);
ItemSelectEventArgs arg = new ItemSelectEventArgs();
arg.ItemData = (DataRow)e.Node.Tag;
if (e.Node.Parent == nodeProjects)
{
arg.Type = NodeType.Project;
ProjectSelect(this, arg);
}
else if (e.Node.Parent == nodeUsers)
{
arg.Type = NodeType.User;
UserSelect(this, arg);
}
}
}
}
Directory Tree Host
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System.IO;
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
namespace DirectoryTreeHost
{
/// <summary>
/// Summary description for DirectoryTreeHost.
/// </summary>
public class DirectoryTreeHost : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public DirectoryTreeHost()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// DirectoryTreeHost
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Name = "DirectoryTreeHost";
this.Text = "DirectoryTreeHost";
this.Load += new System.EventHandler(this.DirectoryTreeHost_Load);
}
#endregion
private void DirectoryTreeHost_Load(object sender, System.EventArgs e)
{
DirectoryTree dirTree = new
DirectoryTree();
dirTree.Size = new Size(this.Width - 30, this.Height - 60);
dirTree.Location = new Point(5, 5);
dirTree.Drive = Char.Parse("C");
this.Controls.Add(dirTree);
}
public static void Main()
{
Application.Run(new DirectoryTreeHost());
}
}
public class DirectoryTree : TreeView
{
public delegate void DirectorySelectedDelegate(object sender,
DirectorySelectedEventArgs e);
public event DirectorySelectedDelegate DirectorySelected;
private Char drive;
public Char Drive
{
get
{
return drive;
}
set
{
drive = value;
RefreshDisplay();
}
}
// This is public so a Refresh can be triggered manually.
public void RefreshDisplay()
{
// Erase the existing tree.
this.Nodes.Clear();
// Set the first node.
TreeNode rootNode = new TreeNode(drive + ":\\");
this.Nodes.Add(rootNode);
// Fill the first level and expand it.
Fill(rootNode);
this.Nodes[0].Expand();
}
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("*");
}
}
protected override void OnBeforeExpand(TreeViewCancelEventArgs e)
{
base.OnBeforeExpand(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);
}
}
protected override void OnAfterSelect(TreeViewEventArgs e)
{
base.OnAfterSelect(e);
// Raise the DirectorySelected event.
if (DirectorySelected != null)
{
DirectorySelected(this,
new DirectorySelectedEventArgs(e.Node.FullPath));
}
}
}
public class DirectorySelectedEventArgs : EventArgs
{
public string DirectoryName;
public DirectorySelectedEventArgs(string directoryName)
{
this.DirectoryName = directoryName;
}
}
}
Drag and drop Tree Node
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.SplitContainer splitContainer1;
private System.Windows.Forms.TreeView treeOne;
private System.Windows.Forms.TreeView treeTwo;
public Form1() {
InitializeComponent();
TreeNode node = treeOne.Nodes.Add("A");
node.Nodes.Add("A1");
node.Nodes.Add("A2");
node.Expand();
node = treeTwo.Nodes.Add("B");
node.Nodes.Add("B1");
node.Nodes.Add("B2");
node.Expand();
treeTwo.AllowDrop = true;
treeOne.AllowDrop = true;
}
private void tree_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
TreeView tree = (TreeView)sender;
TreeNode node = tree.GetNodeAt(e.X, e.Y);
tree.SelectedNode = node;
if (node != null)
{
tree.DoDragDrop(node, DragDropEffects.Copy);
}
}
private void tree_DragOver(object sender, System.Windows.Forms.DragEventArgs e)
{
TreeView tree = (TreeView)sender;
e.Effect = DragDropEffects.None;
TreeNode nodeSource = (TreeNode)e.Data.GetData(typeof(TreeNode));
if (nodeSource != null)
{
if (nodeSource.TreeView != tree)
{
Point pt = new Point(e.X, e.Y);
pt = tree.PointToClient(pt);
TreeNode nodeTarget = tree.GetNodeAt(pt);
if (nodeTarget != null)
{
e.Effect = DragDropEffects.Copy;
tree.SelectedNode = nodeTarget;
}
}
}
}
private void tree_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
{
TreeView tree = (TreeView)sender;
Point pt = new Point(e.X, e.Y);
pt = tree.PointToClient(pt);
TreeNode nodeTarget = tree.GetNodeAt(pt);
TreeNode nodeSource = (TreeNode)e.Data.GetData(typeof(TreeNode));
nodeTarget.Nodes.Add((TreeNode)nodeSource.Clone());
nodeTarget.Expand();
}
private void InitializeComponent()
{
this.splitContainer1 = new System.Windows.Forms.SplitContainer();
this.treeOne = new System.Windows.Forms.TreeView();
this.treeTwo = new System.Windows.Forms.TreeView();
this.splitContainer1.Panel1.SuspendLayout();
this.splitContainer1.Panel2.SuspendLayout();
this.splitContainer1.SuspendLayout();
this.SuspendLayout();
//
// splitContainer1
//
this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer1.Location = new System.Drawing.Point(0, 0);
this.splitContainer1.Name = "splitContainer1";
//
// splitContainer1.Panel1
//
this.splitContainer1.Panel1.Controls.Add(this.treeOne);
//
// splitContainer1.Panel2
//
this.splitContainer1.Panel2.Controls.Add(this.treeTwo);
this.splitContainer1.Size = new System.Drawing.Size(456, 391);
this.splitContainer1.SplitterDistance = 238;
this.splitContainer1.TabIndex = 0;
this.splitContainer1.Text = "splitContainer1";
//
// treeOne
//
this.treeOne.Dock = System.Windows.Forms.DockStyle.Left;
this.treeOne.HideSelection = false;
this.treeOne.Location = new System.Drawing.Point(0, 0);
this.treeOne.Name = "treeOne";
this.treeOne.Size = new System.Drawing.Size(236, 391);
this.treeOne.TabIndex = 5;
this.treeOne.DragDrop += new System.Windows.Forms.DragEventHandler(this.tree_DragDrop);
this.treeOne.DragOver += new System.Windows.Forms.DragEventHandler(this.tree_DragOver);
this.treeOne.MouseDown += new System.Windows.Forms.MouseEventHandler(this.tree_MouseDown);
//
// treeTwo
//
this.treeTwo.Dock = System.Windows.Forms.DockStyle.Fill;
this.treeTwo.Location = new System.Drawing.Point(0, 0);
this.treeTwo.Name = "treeTwo";
this.treeTwo.Size = new System.Drawing.Size(214, 391);
this.treeTwo.TabIndex = 7;
this.treeTwo.DragDrop += new System.Windows.Forms.DragEventHandler(this.tree_DragDrop);
this.treeTwo.DragOver += new System.Windows.Forms.DragEventHandler(this.tree_DragOver);
this.treeTwo.MouseDown += new System.Windows.Forms.MouseEventHandler(this.tree_MouseDown);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(456, 391);
this.Controls.Add(this.splitContainer1);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "TreeView Drag-And-Drop";
this.splitContainer1.Panel1.ResumeLayout(false);
this.splitContainer1.Panel2.ResumeLayout(false);
this.splitContainer1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
Get Selected Node Full Path
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.SplitContainer splitContainer1;
private System.Windows.Forms.TreeView treeOne;
private System.Windows.Forms.TreeView treeTwo;
public Form1() {
InitializeComponent();
TreeNode node = treeOne.Nodes.Add("A");
node.Nodes.Add("A1");
node.Nodes.Add("A2");
node.Expand();
node = treeTwo.Nodes.Add("B");
node.Nodes.Add("B1");
node.Nodes.Add("B2");
node.Expand();
}
private void tree_DoubleClick(object sender, EventArgs e)
{
MessageBox.Show(((TreeView)sender).SelectedNode.FullPath);
}
private void InitializeComponent()
{
this.splitContainer1 = new System.Windows.Forms.SplitContainer();
this.treeOne = new System.Windows.Forms.TreeView();
this.treeTwo = new System.Windows.Forms.TreeView();
this.splitContainer1.Panel1.SuspendLayout();
this.splitContainer1.Panel2.SuspendLayout();
this.splitContainer1.SuspendLayout();
this.SuspendLayout();
//
// splitContainer1
//
this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer1.Location = new System.Drawing.Point(0, 0);
this.splitContainer1.Name = "splitContainer1";
//
// splitContainer1.Panel1
//
this.splitContainer1.Panel1.Controls.Add(this.treeOne);
//
// splitContainer1.Panel2
//
this.splitContainer1.Panel2.Controls.Add(this.treeTwo);
this.splitContainer1.Size = new System.Drawing.Size(456, 391);
this.splitContainer1.SplitterDistance = 238;
this.splitContainer1.TabIndex = 0;
this.splitContainer1.Text = "splitContainer1";
//
// treeOne
//
this.treeOne.Dock = System.Windows.Forms.DockStyle.Left;
this.treeOne.HideSelection = false;
this.treeOne.Location = new System.Drawing.Point(0, 0);
this.treeOne.Name = "treeOne";
this.treeOne.Size = new System.Drawing.Size(236, 391);
this.treeOne.TabIndex = 5;
this.treeOne.DoubleClick += new System.EventHandler(this.tree_DoubleClick);
//
// treeTwo
//
this.treeTwo.Dock = System.Windows.Forms.DockStyle.Fill;
this.treeTwo.Location = new System.Drawing.Point(0, 0);
this.treeTwo.Name = "treeTwo";
this.treeTwo.Size = new System.Drawing.Size(214, 391);
this.treeTwo.TabIndex = 7;
this.treeTwo.DoubleClick += new System.EventHandler(this.tree_DoubleClick);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(456, 391);
this.Controls.Add(this.splitContainer1);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "TreeView Drag-And-Drop";
this.splitContainer1.Panel1.ResumeLayout(false);
this.splitContainer1.Panel2.ResumeLayout(false);
this.splitContainer1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
Read an XML Document and display the file as a Tree
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading ;
using System.Text;
using System.IO ;
using System.Xml;
//
// Read an XML Document and display the file as a Tree.
//
// Shripad Kulkarni
// Date : May 15, 2002
//
namespace XMLTree
{
/// <summary>
/// Summary description for XMLTreeForm.
/// </summary>
public class XMLTreeForm : System.Windows.Forms.Form
{
private System.Windows.Forms.MainMenu mainMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem menuItem3;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
enum VIEW { TREE_VIEW =0} ;
string XMLInputFile = null;
string FileSize = "";
string WorkingDir = Directory.GetCurrentDirectory();
string OrigFormTitle = "";
bool bFileLoaded = false ;
int CurrentView = (int)VIEW.TREE_VIEW ;
Object NodeTag = null ;
Thread t = null ;
TreeNode RootNode = null ;
Point ClickedPoint = new Point(0,0);
ArrayList TreeNodeArray = new ArrayList();
ImageList tr_il = new ImageList();
ImageList tb_il = new ImageList();
Bitmap img_fileopen , img_exit , img_collapse , img_expand , img_about;
private System.Windows.Forms.MenuItem menuItem4;
private System.Windows.Forms.MenuItem menuItem5;
private System.Windows.Forms.ToolBar toolBar1;
private System.Windows.Forms.TreeView treeView1;
private System.Windows.Forms.ToolBarButton Open;
private System.Windows.Forms.ToolBarButton Exit;
private System.Windows.Forms.ToolBarButton About;
private System.Windows.Forms.ToolBarButton SEPARATOR1;
private System.Windows.Forms.ToolBarButton ExpandAll;
private System.Windows.Forms.ToolBarButton CollapseAll;
private System.Windows.Forms.ToolBarButton Stop;
private System.Windows.Forms.ToolBarButton SEPARATOR2;
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.Splitter splitter1;
private System.Windows.Forms.ToolBarButton SEPARATOR3;
delegate void MyDelegate();
public XMLTreeForm()
{
InitializeComponent();
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.mainMenu1 = new System.Windows.Forms.MainMenu();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItem3 = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.menuItem4 = new System.Windows.Forms.MenuItem();
this.menuItem5 = new System.Windows.Forms.MenuItem();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.toolBar1 = new System.Windows.Forms.ToolBar();
this.Open = new System.Windows.Forms.ToolBarButton();
this.SEPARATOR1 = new System.Windows.Forms.ToolBarButton();
this.ExpandAll = new System.Windows.Forms.ToolBarButton();
this.CollapseAll = new System.Windows.Forms.ToolBarButton();
this.Stop = new System.Windows.Forms.ToolBarButton();
this.SEPARATOR3 = new System.Windows.Forms.ToolBarButton();
this.Exit = new System.Windows.Forms.ToolBarButton();
this.About = new System.Windows.Forms.ToolBarButton();
this.SEPARATOR2 = new System.Windows.Forms.ToolBarButton();
this.treeView1 = new System.Windows.Forms.TreeView();
this.listBox1 = new System.Windows.Forms.ListBox();
this.splitter1 = new System.Windows.Forms.Splitter();
this.SuspendLayout();
//
// mainMenu1
//
this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem1,
this.menuItem4});
//
// menuItem1
//
this.menuItem1.Index = 0;
this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem3,
this.menuItem2});
this.menuItem1.OwnerDraw = true;
this.menuItem1.Text = "File";
this.menuItem1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem1_DrawItem);
this.menuItem1.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem1_MeasureItem);
//
// menuItem3
//
this.menuItem3.Index = 0;
this.menuItem3.OwnerDraw = true;
this.menuItem3.Text = "Open";
this.menuItem3.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
this.menuItem3.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
//
// menuItem2
//
this.menuItem2.Index = 1;
this.menuItem2.OwnerDraw = true;
this.menuItem2.Text = "Exit";
this.menuItem2.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
this.menuItem2.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
//
// menuItem4
//
this.menuItem4.Index = 1;
this.menuItem4.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem5});
this.menuItem4.OwnerDraw = true;
this.menuItem4.Text = "Help";
this.menuItem4.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem1_DrawItem);
this.menuItem4.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem1_MeasureItem);
//
// menuItem5
//
this.menuItem5.Index = 0;
this.menuItem5.OwnerDraw = true;
this.menuItem5.Text = "About";
this.menuItem5.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);
this.menuItem5.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
//
// openFileDialog1
//
this.openFileDialog1.Filter = "XML FILES| *.xml";
this.openFileDialog1.FileOk += new System.ruponentModel.CancelEventHandler(this.openFileDialog1_FileOk);
//
// toolBar1
//
this.toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
this.toolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
this.Open,
this.SEPARATOR1,
this.ExpandAll,
this.CollapseAll,
this.Stop,
this.SEPARATOR3,
this.Exit,
this.About,
this.SEPARATOR2});
this.toolBar1.ButtonSize = new System.Drawing.Size(16, 16);
this.toolBar1.Cursor = System.Windows.Forms.Cursors.Hand;
this.toolBar1.DropDownArrows = true;
this.toolBar1.Name = "toolBar1";
this.toolBar1.ShowToolTips = true;
this.toolBar1.Size = new System.Drawing.Size(840, 25);
this.toolBar1.TabIndex = 0;
this.toolBar1.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBar1_ButtonClick);
//
// Open
//
this.Open.ImageIndex = 0;
this.Open.ToolTipText = "Open XML File";
//
// SEPARATOR1
//
this.SEPARATOR1.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// ExpandAll
//
this.ExpandAll.Enabled = false;
this.ExpandAll.ImageIndex = 3;
this.ExpandAll.ToolTipText = "Expand All Nodes";
//
// CollapseAll
//
this.CollapseAll.Enabled = false;
this.CollapseAll.ImageIndex = 4;
this.CollapseAll.ToolTipText = "Collapse All Nodes";
//
// Stop
//
this.Stop.Enabled = false;
this.Stop.ImageIndex = 5;
this.Stop.ToolTipText = "Stop";
//
// SEPARATOR3
//
this.SEPARATOR3.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// Exit
//
this.Exit.ImageIndex = 1;
this.Exit.ToolTipText = "Exit Application";
//
// About
//
this.About.ImageIndex = 2;
this.About.ToolTipText = "Help About";
//
// SEPARATOR2
//
this.SEPARATOR2.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// treeView1
//
this.treeView1.BackColor = System.Drawing.Color.White;
this.treeView1.Cursor = System.Windows.Forms.Cursors.Hand;
this.treeView1.Dock = System.Windows.Forms.DockStyle.Left;
this.treeView1.Font = new System.Drawing.Font("Verdana", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.treeView1.FullRowSelect = true;
this.treeView1.HotTracking = true;
this.treeView1.ImageIndex = -1;
this.treeView1.ItemHeight = 16;
this.treeView1.Location = new System.Drawing.Point(0, 25);
this.treeView1.Name = "treeView1";
this.treeView1.SelectedImageIndex = -1;
this.treeView1.Size = new System.Drawing.Size(360, 472);
this.treeView1.TabIndex = 3;
this.treeView1.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeView1_AfterSelect);
//
// listBox1
//
this.listBox1.Dock = System.Windows.Forms.DockStyle.Fill;
this.listBox1.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.listBox1.ForeColor = System.Drawing.Color.Maroon;
this.listBox1.HorizontalScrollbar = true;
this.listBox1.ItemHeight = 16;
this.listBox1.Location = new System.Drawing.Point(368, 25);
this.listBox1.Name = "listBox1";
this.listBox1.ScrollAlwaysVisible = true;
this.listBox1.Size = new System.Drawing.Size(472, 468);
this.listBox1.TabIndex = 12;
//
// splitter1
//
this.splitter1.Location = new System.Drawing.Point(360, 25);
this.splitter1.Name = "splitter1";
this.splitter1.Size = new System.Drawing.Size(8, 472);
this.splitter1.TabIndex = 11;
this.splitter1.TabStop = false;
//
// XMLTreeForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(840, 497);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.listBox1,
this.splitter1,
this.treeView1,
this.toolBar1});
this.Menu = this.mainMenu1;
this.Name = "XMLTreeForm";
this.Text = "XML Viewer";
this.Resize += new System.EventHandler(this.XMLTreeForm_Resize);
this.Load += new System.EventHandler(this.XMLTreeForm_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new XMLTreeForm());
}
private void XMLTreeForm_Load(object sender, System.EventArgs e)
{
// Add images to the imageList for treeView
tr_il.Images.Add(new Icon(WorkingDir+ "\\ROOT.ICO")); //ROOT 0
tr_il.Images.Add(new Icon(WorkingDir+ "\\ELEMENT.ICO")); //ELEMENT 1
tr_il.Images.Add(new Icon(WorkingDir+ "\\EQUAL.ICO")); //ATTRIBUTE 2
treeView1.ImageList = tr_il;
// Add images to the imageList for Toolbar
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\FileOpen.bmp")); //ROOT 0
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\exit.bmp")); //ELEMENT 1
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\about.bmp")); //ATTRIBUTE 2
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\ExpandTree.bmp")); //ATTRIBUTE 3
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\CollapseTree.bmp")); //ATTRIBUTE 4
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\Stop.bmp")); //ATTRIBUTE 5
toolBar1.ImageList = tb_il;
// Add images to the imageList for the MenuBar
img_fileopen = new Bitmap("FileOpen.bmp");
img_exit = new Bitmap("exit.bmp");
img_expand = new Bitmap("ExpandTree.bmp");
img_collapse = new Bitmap("CollapseTree.bmp");
img_about = new Bitmap("about.bmp");
OrigFormTitle = this.Text ;
}
private void menuItem3_Click(object sender, System.EventArgs e)
{
openFileDialog1.ShowDialog(this);
}
private void openFileDialog1_FileOk(object sender, System.ruponentModel.CancelEventArgs e)
{
// Initialize Buttons
EnableDisableControls() ;
// Initialize All the Arrays
treeView1.Nodes.Clear() ;
listBox1.Items.Clear() ;
TreeNodeArray.Clear();
bFileLoaded = false ;
XMLInputFile = openFileDialog1.FileName ;
this.Text = OrigFormTitle + " ..." + XMLInputFile ;
openFileDialog1.Dispose() ;
// Get the filename and filesize
FileInfo f = new FileInfo(XMLInputFile);
FileSize = f.Length.ToString();
// Begin thread to read input file and load into the ListBox
Thread t = new Thread(new ThreadStart(PopulateList));
t.Start();
// Begin thread to read input file and populate the Tree
Thread tt = new Thread(new ThreadStart(PopulateTree));
tt.Start();
}
private void PopulateList()
{
// Load the File
LoadFileIntoListBox();
}
private void PopulateTree()
{
// TreeView Nodes cannot be added in a thread , until the thread is marshalled
// using an Invoke or beginInvoke call.
// We create a delegate ( Funtion Pointer ) and invoke the thread using he delegate
MyDelegate dlg_obj ;
dlg_obj = new MyDelegate(ParseFile);
treeView1.Invoke(dlg_obj);
}
private void ParseFile()
{
// Use the XMLReader class to read the XML File and populate the
// treeview
try
{
XmlTextReader reader = null;
reader = new XmlTextReader(XMLInputFile);
reader.WhitespaceHandling = WhitespaceHandling.None;
string readerName = "" ;
bool start_node = false ;
int depth = 0;
TreeNode WORKINGNODE = null ;
RootNode = null ;
TreeNode AttrNode = null ;
TreeNode newNode = null ;
bool bIsEmpty = false ;
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
readerName = reader.Name;
bIsEmpty = reader.IsEmptyElement;
if ( ! start_node )
{
start_node = true ;
RootNode = this.treeView1.Nodes.Add(readerName);
AssociateTag(RootNode , reader.LineNumber);
RootNode.SelectedImageIndex = 0 ;
RootNode.ImageIndex = 0 ;
continue ;
}
depth = reader.Depth ;
if ( reader.IsStartElement() && depth == 1 )
{
WORKINGNODE = RootNode.Nodes.Add(reader.Name);
AssociateTag(WORKINGNODE, reader.LineNumber);
}
else
{
TreeNode parent = WORKINGNODE;
WORKINGNODE = parent.Nodes.Add(reader.Name);
AssociateTag(WORKINGNODE, reader.LineNumber);
}
WORKINGNODE.SelectedImageIndex= 1 ;
WORKINGNODE.ImageIndex= 1 ;
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
string rValue = reader.Value.Replace("\r\n", " ");
AttrNode = WORKINGNODE.Nodes.Add(reader.Name);
// AttrNode = WORKINGNODE.Nodes.Add(reader.Name +"="+rValue);
AssociateTag(AttrNode, reader.LineNumber);
AttrNode.SelectedImageIndex = 1 ;
AttrNode.ImageIndex = 1 ;
TreeNode tmp = AttrNode.Nodes.Add(rValue);
tmp.SelectedImageIndex = 2 ;
tmp.ImageIndex = 2 ;
AssociateTag(tmp, reader.LineNumber);
AttrNode.SelectedImageIndex = 2 ;
AttrNode.ImageIndex = 2 ;
}
if ( bIsEmpty )
WORKINGNODE = WORKINGNODE.Parent ;
break;
case XmlNodeType.Text:
{
string rValue = reader.Value.Replace("\r\n" , " ");
newNode = WORKINGNODE.Nodes.Add(rValue);
AssociateTag(newNode, reader.LineNumber);
newNode.SelectedImageIndex = 2 ;
newNode.ImageIndex = 2 ;
}
break;
case XmlNodeType.EndElement:
WORKINGNODE = WORKINGNODE.Parent ;
break;
}
}
reader.Close();
RootNode.Expand();
}
catch(Exception eee)
{
Console.WriteLine(eee.Message);
}
}
private void treeView1_Click(object sender, System.EventArgs e)
{
}
private void treeView1_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
{
if ( ! bFileLoaded ) return ;
// The treenode is selected. Every node is tagged with LineNumber ( from input file ).
// This allows us to jump to the line in the file.
TreeNode tn;
tn = (TreeNode)e.Node;
Object ln = tn.Tag ;
int line = Convert.ToInt32(ln.ToString());
MoveToLine(line);
}
private void menuItem2_Click(object sender, System.EventArgs e)
{
AppExit();
}
private void AppExit()
{
Application.Exit() ;
}
private void LoadFileIntoListBox()
{
// Load the xml file into a listbox.
try
{
StreamReader sr = new StreamReader(XMLInputFile, Encoding.ASCII);
sr.BaseStream.Seek(0, SeekOrigin.Begin);
while (sr.Peek() > -1)
{
Thread.Sleep(5);
string str = sr.ReadLine();
listBox1.Items.Add(str);
}
sr.Close();
bFileLoaded = true ;
listBox1.SetSelected(1 , true);
}
catch(Exception ee)
{
Console.WriteLine("Error Reading File into ListBox " + ee.Message);
}
}
private void MoveToLine(int ln)
{
// Select the input line from the file in the listbox
listBox1.SetSelected(ln-1 , true);
}
private void AssociateTag(TreeNode t , int l)
{
// Associate a line number Tag with every node in the tree
NodeTag = new Object();
NodeTag = l ;
t.Tag = NodeTag ;
}
private void menuItem5_Click(object sender, System.EventArgs e)
{
// About Box is clicked
ShowAboutBox();
}
private void ShowAboutBox()
{
About abt = new About() ;
abt.ShowDialog() ;
}
private void EnableDisableControls()
{
// Enable Disable Buttons
switch ( CurrentView )
{
case 0 : // TREE VIEW
{
ExpandAll.Enabled = true;
CollapseAll.Enabled = true;
Stop.Enabled = true ;
treeView1.Visible = true;
}
break ;
case 1 : // REPORT VIEW
{
ExpandAll.Enabled = false ;
CollapseAll.Enabled = false ;
Stop.Enabled = false ;
}
break ;
}
}
private void toolBar1_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
{
// Invoke the function upon clicking the toolbar button
int x = int.Parse(toolBar1.Buttons.IndexOf(e.Button).ToString());
switch(toolBar1.Buttons.IndexOf(e.Button))
{
case 0:
openFileDialog1.ShowDialog(this);
break;
case 1:
//separator
break;
case 2:
TExpandAll() ;
break;
case 3:
TCollapseAll();
break;
case 4:
if ( t != null && t.IsAlive )
{
t.Abort() ;
t = null ;
EnableDisableControls();
}
break;
case 5:
break;
case 6:
AppExit();
break;
case 7:
ShowAboutBox();
break;
case 8: // separator
//separator
break;
case 9: // Go Back
break;
case 10:// separator
break;
case 11:// Go Back
CurrentView = (int)VIEW.TREE_VIEW ;
EnableDisableControls();
break;
}
}
private void TExpandAll()
{
t = new Thread(new ThreadStart(TE));
t.Start();
}
private void TE()
{
// Expand all nodes in the tree
treeView1.ExpandAll() ;
}
private void TCollapseAll()
{
// Collapse all nodes in the tree
treeView1.CollapseAll() ;
}
void Clear()
{
TreeNodeArray.Clear();
}
private void menuItem1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
//Owner Draw Menu Items
//Get the bounding rectangle
Rectangle rc = new Rectangle(e.Bounds.X+1 , e.Bounds.Y+1, e.Bounds.Width-5, e.Bounds.Height-1);
//Fill the rectangle
e.Graphics.FillRectangle(new SolidBrush(Color.LightGray) , rc);
//Unbox the menu item
MenuItem s = (MenuItem)sender ;
string s1 = s.Text ;
//Set the stringformat object
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center ;
e.Graphics.DrawString(s1 , new Font("Ariel" ,10), new SolidBrush(Color.Black) , rc , sf );
Console.WriteLine(e.State.ToString());
//Check if the object is selected.
if ( e.State == (DrawItemState.NoAccelerator | DrawItemState.Selected) ||
e.State == ( DrawItemState.NoAccelerator | DrawItemState.HotLight) )
{
// Draw selected menu item
e.Graphics.FillRectangle(new SolidBrush(Color.LightYellow) , rc);
e.Graphics.DrawString( s1 , new Font("Veranda" , 10 , FontStyle.Bold ) , new SolidBrush(Color.Red), rc ,sf);
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black)), rc );
}
e.DrawFocusRectangle();
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black), 1 ), rc );
}
private void menuItem1_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
{
// Set the menu item height
e.ItemWidth = 75 ;
}
private void menuItem3_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
{
// Set the sub menu item height and width
e.ItemWidth = 95 ;
e.ItemHeight = 25 ;
}
private void menuItem3_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
//Owner Draw Sub Menu Items
Rectangle rc = new Rectangle(e.Bounds.X, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
e.Graphics.FillRectangle(new SolidBrush(Color.LightGray) , rc);
MenuItem s = (MenuItem)sender ;
string s1 = s.Text ;
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Far ;
sf.LineAlignment = StringAlignment.Center;
Image useImage = null ;
if ( s1 == "Open" )
{
useImage = img_fileopen;
}
if ( s1 == "ExpandAll" )
{
if ( CurrentView == (int)VIEW.TREE_VIEW )
s.Enabled = true;
else
s.Enabled = false ;
useImage = img_expand;
}
if ( s1 == "Exit" )
{
useImage = img_exit;
}
if ( s1 == "CollapseAll" )
{
if ( CurrentView == (int)VIEW.TREE_VIEW )
s.Enabled = true;
else
s.Enabled = false ;
useImage = img_collapse;
}
if ( s1 == "About" )
{
useImage = img_about;
}
Rectangle rcText = rc ;
rcText.Width-=5 ;
e.Graphics.DrawString(s1 , new Font("Veranda" ,10), new SolidBrush(Color.Blue) , rcText, sf );
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.LightGray)), rc );
if ( e.State == ( DrawItemState.NoAccelerator | DrawItemState.Selected))
{
Rectangle rc1= rc ;
rc1.X = rc1.X + useImage.Width + 5 ;
rc1.Width = rc.Width - 25 ;
rc1.Height = rc.Height- 2 ;
e.Graphics.FillRectangle(new SolidBrush(Color.LightYellow) , rc);
e.Graphics.DrawString( s1 , new Font("Veranda" , 10 , FontStyle.Bold | FontStyle.Underline) , new SolidBrush(Color.Red), rcText,sf);
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black),3), rc );
e.DrawFocusRectangle();
}
if ( useImage != null )
{
SizeF sz = useImage.PhysicalDimension;
e.Graphics.DrawImage(useImage, e.Bounds.X+5 , ( e.Bounds.Bottom + e.Bounds.Top ) /2 - sz.Height/2);
}
}
private void XMLTreeForm_Resize(object sender, System.EventArgs e)
{
}
}
}<A href="http://www.nfex.ru/Code/CSharpDownload/XMLTree.zip">XMLTree.zip( 85 k)</a>
Recursively load Directory info into TreeView
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
public class Form1 : Form
{
private System.Windows.Forms.TreeView directoryTreeView;
string substringDirectory;
public Form1() {
InitializeComponent();
directoryTreeView.Nodes.Clear();
String path = "c:\\Temp";
directoryTreeView.Nodes.Add( path );
PopulateTreeView(path, directoryTreeView.Nodes[ 0 ] );
}
public void PopulateTreeView(string directoryValue, TreeNode parentNode )
{
string[] directoryArray =
Directory.GetDirectories( directoryValue );
try
{
if ( directoryArray.Length != 0 )
{
foreach ( string directory in directoryArray )
{
substringDirectory = directory.Substring(
directory.LastIndexOf( "\\" ) + 1,
directory.Length - directory.LastIndexOf( "\\" ) - 1 );
TreeNode myNode = new TreeNode( substringDirectory );
parentNode.Nodes.Add( myNode );
PopulateTreeView( directory, myNode );
}
}
} catch ( UnauthorizedAccessException ) {
parentNode.Nodes.Add( "Access denied" );
} // end catch
}
private void InitializeComponent()
{
this.directoryTreeView = new System.Windows.Forms.TreeView();
this.SuspendLayout();
//
// directoryTreeView
//
this.directoryTreeView.Location = new System.Drawing.Point(12, 77);
this.directoryTreeView.Name = "directoryTreeView";
this.directoryTreeView.Size = new System.Drawing.Size(284, 265);
this.directoryTreeView.TabIndex = 0;
//
// TreeViewDirectoryStructureForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(304, 354);
this.Controls.Add(this.directoryTreeView);
this.Name = "TreeViewDirectoryStructureForm";
this.Text = "TreeViewDirectoryStructure";
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
Subclass TreeView
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
class DirectoryTreeView: TreeView
{
public DirectoryTreeView()
{
ImageList = new ImageList();
ImageList.Images.Add(new Bitmap(GetType(), "FLOPPY.BMP"));
ImageList.Images.Add(new Bitmap(GetType(), "FOLD.BMP"));
ImageList.Images.Add(new Bitmap(GetType(), "OPENFOLD.BMP"));
RefreshTree();
}
public void RefreshTree()
{
BeginUpdate();
Nodes.Clear();
string[] astrDrives = Directory.GetLogicalDrives();
foreach (string str in astrDrives)
{
TreeNode tnDrive = new TreeNode(str, 0, 0);
Nodes.Add(tnDrive);
AddDirectories(tnDrive);
if (str == "C:\\")
SelectedNode = tnDrive;
}
EndUpdate();
}
void AddDirectories(TreeNode tn)
{
tn.Nodes.Clear();
string strPath = tn.FullPath;
DirectoryInfo dirinfo = new DirectoryInfo(strPath);
DirectoryInfo[] adirinfo;
adirinfo = dirinfo.GetDirectories();
foreach (DirectoryInfo di in adirinfo)
{
TreeNode tnDir = new TreeNode(di.Name, 1, 2);
tn.Nodes.Add(tnDir);
}
}
protected override void OnBeforeExpand(TreeViewCancelEventArgs tvcea)
{
base.OnBeforeExpand(tvcea);
BeginUpdate();
foreach (TreeNode tn in tvcea.Node.Nodes)
AddDirectories(tn);
EndUpdate();
}
}
class DirectoriesAndFiles: Form
{
DirectoryTreeView dirtree;
Panel panel;
TreeNode tnSelect;
public static void Main()
{
Application.Run(new DirectoriesAndFiles());
}
public DirectoriesAndFiles()
{
Text = "Directories and Files";
BackColor = SystemColors.Window;
ForeColor = SystemColors.WindowText;
panel = new Panel();
panel.Parent = this;
panel.Dock = DockStyle.Fill;
panel.Paint += new PaintEventHandler(PanelOnPaint);
Splitter split = new Splitter();
split.Parent = this;
split.Dock = DockStyle.Left;
split.BackColor = SystemColors.Control;
dirtree = new DirectoryTreeView();
dirtree.Parent = this;
dirtree.Dock = DockStyle.Left;
dirtree.AfterSelect += new TreeViewEventHandler(DirectoryTreeViewOnAfterSelect);
Menu = new MainMenu();
Menu.MenuItems.Add("View");
MenuItem mi = new MenuItem("Refresh", new EventHandler(MenuOnRefresh), Shortcut.F5);
Menu.MenuItems[0].MenuItems.Add(mi);
}
void DirectoryTreeViewOnAfterSelect(object obj, TreeViewEventArgs tvea)
{
tnSelect = tvea.Node;
panel.Invalidate();
}
void PanelOnPaint(object obj, PaintEventArgs pea)
{
if (tnSelect == null)
return;
Panel panel = (Panel) obj;
Graphics grfx = pea.Graphics;
DirectoryInfo dirinfo = new DirectoryInfo(tnSelect.FullPath);
FileInfo[] afileinfo;
Brush brush = new SolidBrush(panel.ForeColor);
int y = 0;
afileinfo = dirinfo.GetFiles();
foreach (FileInfo fileinfo in afileinfo)
{
grfx.DrawString(fileinfo.Name, Font, brush, 0, y);
y += Font.Height;
}
}
void MenuOnRefresh(object obj, EventArgs ea)
{
dirtree.RefreshTree();
}
}
TreeView Data Binding
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace TreeViewDataBinding
{
/// <summary>
/// Summary description for TreeViewDataBinding.
/// </summary>
public class TreeViewDataBinding : System.Windows.Forms.Form
{
internal System.Windows.Forms.Panel Panel2;
internal System.Windows.Forms.Panel Panel3;
internal System.Windows.Forms.Label lblInfo;
internal System.Windows.Forms.Label Label1;
internal System.Windows.Forms.Splitter Splitter1;
internal System.Windows.Forms.TreeView treeDB;
internal System.Windows.Forms.Panel Panel1;
internal System.Windows.Forms.Button cmdClose;
internal System.Windows.Forms.GroupBox GroupBox1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public TreeViewDataBinding()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Panel2 = new System.Windows.Forms.Panel();
this.Panel3 = new System.Windows.Forms.Panel();
this.lblInfo = new System.Windows.Forms.Label();
this.Label1 = new System.Windows.Forms.Label();
this.Splitter1 = new System.Windows.Forms.Splitter();
this.treeDB = new System.Windows.Forms.TreeView();
this.Panel1 = new System.Windows.Forms.Panel();
this.cmdClose = new System.Windows.Forms.Button();
this.GroupBox1 = new System.Windows.Forms.GroupBox();
this.Panel2.SuspendLayout();
this.Panel3.SuspendLayout();
this.Panel1.SuspendLayout();
this.SuspendLayout();
//
// Panel2
//
this.Panel2.Controls.AddRange(new System.Windows.Forms.Control[] {
this.Panel3,
this.Splitter1,
this.treeDB});
this.Panel2.Dock = System.Windows.Forms.DockStyle.Fill;
this.Panel2.Location = new System.Drawing.Point(5, 5);
this.Panel2.Name = "Panel2";
this.Panel2.Size = new System.Drawing.Size(446, 264);
this.Panel2.TabIndex = 8;
//
// Panel3
//
this.Panel3.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lblInfo,
this.Label1});
this.Panel3.Dock = System.Windows.Forms.DockStyle.Fill;
this.Panel3.Location = new System.Drawing.Point(239, 0);
this.Panel3.Name = "Panel3";
this.Panel3.Size = new System.Drawing.Size(207, 264);
this.Panel3.TabIndex = 7;
//
// lblInfo
//
this.lblInfo.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.lblInfo.BackColor = System.Drawing.SystemColors.Window;
this.lblInfo.Location = new System.Drawing.Point(16, 12);
this.lblInfo.Name = "lblInfo";
this.lblInfo.Size = new System.Drawing.Size(176, 240);
this.lblInfo.TabIndex = 1;
//
// Label1
//
this.Label1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.Label1.BackColor = System.Drawing.SystemColors.Window;
this.Label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.Label1.Location = new System.Drawing.Point(4, 0);
this.Label1.Name = "Label1";
this.Label1.Size = new System.Drawing.Size(200, 264);
this.Label1.TabIndex = 2;
//
// Splitter1
//
this.Splitter1.Location = new System.Drawing.Point(236, 0);
this.Splitter1.Name = "Splitter1";
this.Splitter1.Size = new System.Drawing.Size(3, 264);
this.Splitter1.TabIndex = 6;
this.Splitter1.TabStop = false;
//
// treeDB
//
this.treeDB.Dock = System.Windows.Forms.DockStyle.Left;
this.treeDB.ImageIndex = -1;
this.treeDB.Name = "treeDB";
this.treeDB.SelectedImageIndex = -1;
this.treeDB.Size = new System.Drawing.Size(236, 264);
this.treeDB.TabIndex = 4;
this.treeDB.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeDB_AfterSelect);
this.treeDB.BeforeExpand += new System.Windows.Forms.TreeViewCancelEventHandler(this.treeDB_BeforeExpand);
//
// Panel1
//
this.Panel1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.cmdClose,
this.GroupBox1});
this.Panel1.Dock = System.Windows.Forms.DockStyle.Bottom;
this.Panel1.Location = new System.Drawing.Point(5, 269);
this.Panel1.Name = "Panel1";
this.Panel1.Size = new System.Drawing.Size(446, 36);
this.Panel1.TabIndex = 7;
//
// cmdClose
//
this.cmdClose.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
this.cmdClose.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.cmdClose.Location = new System.Drawing.Point(372, 12);
this.cmdClose.Name = "cmdClose";
this.cmdClose.Size = new System.Drawing.Size(72, 24);
this.cmdClose.TabIndex = 4;
this.cmdClose.Text = "Close";
this.cmdClose.Click += new System.EventHandler(this.cmdClose_Click);
//
// GroupBox1
//
this.GroupBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.GroupBox1.Name = "GroupBox1";
this.GroupBox1.Size = new System.Drawing.Size(444, 8);
this.GroupBox1.TabIndex = 5;
this.GroupBox1.TabStop = false;
//
// TreeViewDataBinding
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(456, 310);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.Panel2,
this.Panel1});
this.DockPadding.All = 5;
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "TreeViewDataBinding";
this.Text = "TreeViewDataBinding";
this.Load += new System.EventHandler(this.TreeViewDataBinding_Load);
this.Panel2.ResumeLayout(false);
this.Panel3.ResumeLayout(false);
this.Panel1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new TreeViewDataBinding());
}
private ProductDatabase DataClass = new ProductDatabase();
private void TreeViewDataBinding_Load(object sender, System.EventArgs e)
{
TreeNode nodeParent;
foreach (DataRow row in DataClass.GetCategories().Rows)
{
// Add the category node.
nodeParent = treeDB.Nodes.Add(row[ProductDatabase.CategoryField.Name].ToString());
nodeParent.ImageIndex = 0;
// Store the disconnected category information.
nodeParent.Tag = row;
// Add a "dummy" node.
nodeParent.Nodes.Add("*");
}
}
private void treeDB_BeforeExpand(object sender, System.Windows.Forms.TreeViewCancelEventArgs e)
{
TreeNode nodeSelected, nodeChild;
nodeSelected = e.Node;
if (nodeSelected.Nodes[0].Text == "*")
{
// This is a dummy node.
nodeSelected.Nodes.Clear();
foreach (DataRow row in
DataClass.GetProductsInCategory((DataRow)nodeSelected.Tag))
{
nodeChild = nodeSelected.Nodes.Add(row[ProductDatabase.ProductField.Name].ToString());
// Store the disconnected product information.
nodeChild.Tag = row;
nodeChild.ImageIndex = 1;
nodeChild.SelectedImageIndex = 1;
}
}
}
private void treeDB_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
{
lblInfo.Text = DataClass.GetDisplayText((DataRow)e.Node.Tag);
}
private void cmdClose_Click(object sender, System.EventArgs e)
{
this.Close();
}
}
public class ProductDatabase
{
public class Tables
{
public const string Product = "Products";
public const string Category = "Categories";
}
public class ProductField
{
public const string Name = "ModelName";
public const string Description = "Description";
}
public class CategoryField
{
public const string Name = "CategoryName";
}
private DataSet dsStore;
DataRelation relCategoryProduct;
public ProductDatabase()
{
dsStore = new DataSet();
dsStore.ReadXmlSchema(Application.StartupPath + "\\store.xsd");
dsStore.ReadXml(Application.StartupPath + "\\store.xml");
// Define the relation.
relCategoryProduct = new DataRelation("Prod_Cat",
dsStore.Tables["Categories"].Columns["CategoryID"],
dsStore.Tables["Products"].Columns["CategoryID"]);
dsStore.Relations.Add(relCategoryProduct);
}
public DataTable GetCategories()
{
return dsStore.Tables["Categories"];
}
public DataRow[] GetProductsInCategory(DataRow rowParent)
{
return rowParent.GetChildRows(relCategoryProduct);
}
public string GetDisplayText(DataRow row)
{
string text = "";
switch (row.Table.TableName)
{
case Tables.Product:
text = "ID: " + row[0] + "\n";
text += "Name: " + row[ProductField.Name] + "\n\n";
text += row[ProductField.Description];
break;
}
return text;
}
}
}<A href="http://www.nfex.ru/Code/CSharpDownload/TreeViewDataBinding.zip">TreeViewDataBinding.zip( 56 k)</a>
TreeView Demo
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace TreeView
{
/// <summary>
/// Summary description for TreeViewDemo.
/// </summary>
public class TreeViewDemo : System.Windows.Forms.Form
{
private System.Windows.Forms.TreeView treeView1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
ImageList il = new ImageList();
public TreeViewDemo()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.treeView1 = new System.Windows.Forms.TreeView();
this.SuspendLayout();
//
// treeView1
//
this.treeView1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.treeView1.Font = new System.Drawing.Font("Courier New", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.treeView1.HotTracking = true;
this.treeView1.ImageIndex = -1;
this.treeView1.Indent = 30;
this.treeView1.ItemHeight = 30;
this.treeView1.LabelEdit = true;
this.treeView1.Location = new System.Drawing.Point(8, 16);
this.treeView1.Name = "treeView1";
this.treeView1.SelectedImageIndex = -1;
this.treeView1.Size = new System.Drawing.Size(360, 272);
this.treeView1.TabIndex = 0;
//
// TreeViewDemo
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(376, 309);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.treeView1});
this.Name = "TreeViewDemo";
this.Text = "TreeView Control";
this.Load += new System.EventHandler(this.TreeViewDemo_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new TreeViewDemo());
}
private void TreeViewDemo_Load(object sender, System.EventArgs e)
{
// Select icons into the image list
il.Images.Add(new Icon("KEY04.ICO"));
il.Images.Add(new Icon("ARW06LT.ICO"));
il.Images.Add(new Icon("LITENING.ICO"));
il.Images.Add(new Icon("ARW06UP.ICO"));
treeView1.ImageList = il ;
// Create the RootNode
TreeNode rootNode = treeView1.Nodes.Add("USA");
rootNode.ImageIndex =0 ;
// Create the Child nodes for the root
TreeNode states1 = rootNode.Nodes.Add("New York");
states1.ImageIndex =1 ;
TreeNode states2 = rootNode.Nodes.Add("Michigan");
states2.ImageIndex =1 ;
TreeNode states3 = rootNode.Nodes.Add("Wisconsin");
states3.ImageIndex =1 ;
TreeNode states4 = rootNode.Nodes.Add("California");
states4.ImageIndex =1 ;
// Create siblings nodes for the Child nodes
TreeNode child = states1.Nodes.Add("Rochester");
child.ImageIndex = 2 ;
child =states1.Nodes.Add("new York");
child.ImageIndex = 2 ;
child =states1.Nodes.Add("Albany");
child.ImageIndex = 2 ;
child = states2.Nodes.Add("Detroit");
child.ImageIndex = 2 ;
child =states2.Nodes.Add("Ann Arbor");
child.ImageIndex = 2 ;
child =states2.Nodes.Add("Lansing");
child.ImageIndex = 2 ;
child = states3.Nodes.Add("Milwaukee");
child.ImageIndex = 2 ;
child =states3.Nodes.Add("Madison");
child.ImageIndex = 2 ;
child =states3.Nodes.Add("La Cross");
child.ImageIndex = 2 ;
child = states4.Nodes.Add("Los Angeles");
child.ImageIndex = 2 ;
child =states4.Nodes.Add("San Fransisco");
child.ImageIndex = 2 ;
child =states4.Nodes.Add("San Diego");
child.ImageIndex = 2 ;
}
}
}<A href="http://www.nfex.ru/Code/CSharpDownload/TreeView.zip">TreeView.zip( 32 k)</a>
TreeView Drag And Drop
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace TreeViewDragAndDrop
{
/// <summary>
/// Summary description for TreeViewDragAndDrop.
/// </summary>
public class TreeViewDragAndDrop : System.Windows.Forms.Form
{
internal System.Windows.Forms.TreeView treeTwo;
internal System.Windows.Forms.Splitter Splitter1;
internal System.Windows.Forms.TreeView treeOne;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public TreeViewDragAndDrop()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.treeTwo = new System.Windows.Forms.TreeView();
this.Splitter1 = new System.Windows.Forms.Splitter();
this.treeOne = new System.Windows.Forms.TreeView();
this.SuspendLayout();
//
// treeTwo
//
this.treeTwo.Dock = System.Windows.Forms.DockStyle.Fill;
this.treeTwo.HideSelection = false;
this.treeTwo.ImageIndex = -1;
this.treeTwo.Location = new System.Drawing.Point(239, 0);
this.treeTwo.Name = "treeTwo";
this.treeTwo.SelectedImageIndex = -1;
this.treeTwo.Size = new System.Drawing.Size(281, 366);
this.treeTwo.TabIndex = 6;
this.treeTwo.MouseDown += new System.Windows.Forms.MouseEventHandler(this.tree_MouseDown);
this.treeTwo.DragOver += new System.Windows.Forms.DragEventHandler(this.tree_DragOver);
this.treeTwo.DragDrop += new System.Windows.Forms.DragEventHandler(this.tree_DragDrop);
//
// Splitter1
//
this.Splitter1.Location = new System.Drawing.Point(236, 0);
this.Splitter1.Name = "Splitter1";
this.Splitter1.Size = new System.Drawing.Size(3, 366);
this.Splitter1.TabIndex = 5;
this.Splitter1.TabStop = false;
//
// treeOne
//
this.treeOne.Dock = System.Windows.Forms.DockStyle.Left;
this.treeOne.HideSelection = false;
this.treeOne.ImageIndex = -1;
this.treeOne.Name = "treeOne";
this.treeOne.SelectedImageIndex = -1;
this.treeOne.Size = new System.Drawing.Size(236, 366);
this.treeOne.TabIndex = 4;
this.treeOne.MouseDown += new System.Windows.Forms.MouseEventHandler(this.tree_MouseDown);
this.treeOne.DragOver += new System.Windows.Forms.DragEventHandler(this.tree_DragOver);
this.treeOne.DragDrop += new System.Windows.Forms.DragEventHandler(this.tree_DragDrop);
//
// TreeViewDragAndDrop
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(520, 366);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.treeTwo,
this.Splitter1,
this.treeOne});
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "TreeViewDragAndDrop";
this.Text = "TreeView Drag-And-Drop";
this.Load += new System.EventHandler(this.TreeViewDragAndDrop_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new TreeViewDragAndDrop());
}
private void TreeViewDragAndDrop_Load(object sender, System.EventArgs e)
{
TreeNode node = treeOne.Nodes.Add("Fruits");
node.Nodes.Add("Apple");
node.Nodes.Add("Peach");
node.Expand();
node = treeTwo.Nodes.Add("Vegetables");
node.Nodes.Add("Tomato");
node.Nodes.Add("Eggplant");
node.Expand();
treeTwo.AllowDrop = true;
treeOne.AllowDrop = true;
}
private void tree_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
// Get the tree.
TreeView tree = (TreeView)sender;
// Get the node underneath the mouse.
TreeNode node = tree.GetNodeAt(e.X, e.Y);
tree.SelectedNode = node;
// Start the drag-and-drop operation with a cloned copy of the node.
if (node != null)
{
tree.DoDragDrop(node.Clone(), DragDropEffects.Copy);
}
}
private void tree_DragOver(object sender, System.Windows.Forms.DragEventArgs e)
{
// Get the tree.
TreeView tree = (TreeView)sender;
// Drag and drop denied by default.
e.Effect = DragDropEffects.None;
// Is it a valid format?
if (e.Data.GetData(typeof(TreeNode)) != null)
{
// Get the screen point.
Point pt = new Point(e.X, e.Y);
// Convert to a point in the TreeView"s coordinate system.
pt = tree.PointToClient(pt);
// Is the mouse over a valid node?
TreeNode node = tree.GetNodeAt(pt);
if (node != null)
{
e.Effect = DragDropEffects.Copy;
tree.SelectedNode = node;
}
}
}
private void tree_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
{
// Get the tree.
TreeView tree = (TreeView)sender;
// Get the screen point.
Point pt = new Point(e.X, e.Y);
// Convert to a point in the TreeView"s coordinate system.
pt = tree.PointToClient(pt);
// Get the node underneath the mouse.
TreeNode node = tree.GetNodeAt(pt);
// Add a child node.
node.Nodes.Add((TreeNode)e.Data.GetData(typeof(TreeNode)));
// Show the newly added node if it is not already visible.
node.Expand();
}
}
}
TreeView Example
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace TreeViewExample
{
/// <summary>
/// Summary description for TreeViewExample.
/// </summary>
public class TreeViewExample : System.Windows.Forms.Form
{
internal System.Windows.Forms.TreeView treeFood;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public TreeViewExample()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.treeFood = new System.Windows.Forms.TreeView();
this.SuspendLayout();
//
// treeFood
//
this.treeFood.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.treeFood.ImageIndex = -1;
this.treeFood.Location = new System.Drawing.Point(4, 5);
this.treeFood.Name = "treeFood";
this.treeFood.SelectedImageIndex = -1;
this.treeFood.Size = new System.Drawing.Size(284, 256);
this.treeFood.TabIndex = 1;
this.treeFood.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeFood_AfterSelect);
//
// TreeViewExample
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.treeFood});
this.Name = "TreeViewExample";
this.Text = "TreeView Example";
this.Load += new System.EventHandler(this.TreeViewExample_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new TreeViewExample());
}
private void TreeViewExample_Load(object sender, System.EventArgs e)
{
TreeNode node;
node = treeFood.Nodes.Add("Fruits");
node.Nodes.Add("Apple");
node.Nodes.Add("Peach");
node = treeFood.Nodes.Add("Vegetables");
node.Nodes.Add("Tomato");
node.Nodes.Add("Eggplant");
}
private void treeFood_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
{
if (e.Action == TreeViewAction.ByMouse)
{
MessageBox.Show(e.Node.FullPath);
}
}
}
}
TreeView ImageIndex
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.TreeView treeView1;
ImageList il = new ImageList();
public Form1() {
this.treeView1 = new System.Windows.Forms.TreeView();
this.SuspendLayout();
this.treeView1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.treeView1.Font = new System.Drawing.Font("Courier New", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.treeView1.HotTracking = true;
this.treeView1.ImageIndex = -1;
this.treeView1.Indent = 30;
this.treeView1.ItemHeight = 30;
this.treeView1.LabelEdit = true;
this.treeView1.Location = new System.Drawing.Point(8, 16);
this.treeView1.SelectedImageIndex = -1;
this.treeView1.Size = new System.Drawing.Size(360, 272);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(376, 309);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.treeView1});
this.Text = "TreeView Control";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e) {
il.Images.Add(new Icon("1.ICO"));
il.Images.Add(new Icon("2.ICO"));
il.Images.Add(new Icon("3.ICO"));
il.Images.Add(new Icon("4.ICO"));
treeView1.ImageList = il;
TreeNode rootNode = treeView1.Nodes.Add("USA");
rootNode.ImageIndex = 0;
TreeNode states1 = rootNode.Nodes.Add("a");
states1.ImageIndex = 1;
TreeNode states2 = rootNode.Nodes.Add("b");
states2.ImageIndex = 1;
TreeNode states3 = rootNode.Nodes.Add("c");
states3.ImageIndex = 1;
TreeNode states4 = rootNode.Nodes.Add("d");
states4.ImageIndex = 1;
TreeNode child = states1.Nodes.Add("A");
child.ImageIndex = 2;
child = states1.Nodes.Add("e");
child.ImageIndex = 2;
child = states1.Nodes.Add("f");
child.ImageIndex = 2;
child = states2.Nodes.Add("g");
child.ImageIndex = 2;
child = states2.Nodes.Add("h");
child.ImageIndex = 2;
child = states2.Nodes.Add("i");
child.ImageIndex = 2;
child = states3.Nodes.Add("j");
child.ImageIndex = 2;
child = states3.Nodes.Add("k");
child.ImageIndex = 2;
child = states3.Nodes.Add("l");
child.ImageIndex = 2;
child = states4.Nodes.Add("m");
child.ImageIndex = 2;
child = states4.Nodes.Add("n");
child.ImageIndex = 2;
child = states4.Nodes.Add("o");
child.ImageIndex = 2;
}
}