using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
public class SimpleTvForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TreeView tvSimple;
private System.Windows.Forms.Button cmdExpandAll;
private System.Windows.Forms.Button cmdCollapseAll;
private System.Windows.Forms.ContextMenu ctxmTvNodes;
private System.Windows.Forms.MenuItem mnuExpandNode;
private System.Windows.Forms.MenuItem mnuCollapseNode;
public SimpleTvForm()
{
this.tvSimple = new System.Windows.Forms.TreeView();
this.ctxmTvNodes = new System.Windows.Forms.ContextMenu();
this.mnuExpandNode = new System.Windows.Forms.MenuItem();
this.mnuCollapseNode = new System.Windows.Forms.MenuItem();
this.cmdExpandAll = new System.Windows.Forms.Button();
this.cmdCollapseAll = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// tvSimple
//
this.tvSimple.ContextMenu = this.ctxmTvNodes;
this.tvSimple.ImageIndex = -1;
this.tvSimple.Location = new System.Drawing.Point(8, 8);
this.tvSimple.Name = "tvSimple";
this.tvSimple.Nodes.AddRange(new System.Windows.Forms.TreeNode[] {
new System.Windows.Forms.TreeNode("Continents", new System.Windows.Forms.TreeNode[] {
new System.Windows.Forms.TreeNode("Africa"),
new System.Windows.Forms.TreeNode("America"),
new System.Windows.Forms.TreeNode("Europe"),
new System.Windows.Forms.TreeNode("Asia"),
new System.Windows.Forms.TreeNode("Australia")}),
new System.Windows.Forms.TreeNode("SUV\'s", new System.Windows.Forms.TreeNode[] {
new System.Windows.Forms.TreeNode("Hummer"),
new System.Windows.Forms.TreeNode("Pinzgauer")})});
this.tvSimple.SelectedImageIndex = -1;
this.tvSimple.Size = new System.Drawing.Size(272, 232);
this.tvSimple.TabIndex = 0;
this.tvSimple.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.AfterSelect);
//
// ctxmTvNodes
//
this.ctxmTvNodes.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuExpandNode,
this.mnuCollapseNode});
//
// mnuExpandNode
//
this.mnuExpandNode.Index = 0;
this.mnuExpandNode.Text = "Expand node";
this.mnuExpandNode.Click += new System.EventHandler(this.OnExpandNode);
//
// mnuCollapseNode
//
this.mnuCollapseNode.Index = 1;
this.mnuCollapseNode.Text = "Collapse node";
this.mnuCollapseNode.Click += new System.EventHandler(this.OnCollapseNode);
//
// cmdExpandAll
//
this.cmdExpandAll.Location = new System.Drawing.Point(8, 256);
this.cmdExpandAll.Name = "cmdExpandAll";
this.cmdExpandAll.TabIndex = 1;
this.cmdExpandAll.Text = "expand all";
this.cmdExpandAll.Click += new System.EventHandler(this.cmdExpandAll_Click);
//
// cmdCollapseAll
//
this.cmdCollapseAll.Location = new System.Drawing.Point(96, 256);
this.cmdCollapseAll.Name = "cmdCollapseAll";
this.cmdCollapseAll.TabIndex = 2;
this.cmdCollapseAll.Text = "collapse all";
this.cmdCollapseAll.Click += new System.EventHandler(this.cmdCollapseAll_Click);
//
// SimpleTvForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 301);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.cmdCollapseAll,
this.cmdExpandAll,
this.tvSimple});
this.Name = "SimpleTvForm";
this.Text = "Simple";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new SimpleTvForm());
}
private void AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
{
// MessageBox.Show("Node " + e.Node.FullPath + " was selected");
}
private void cmdExpandAll_Click(object sender, System.EventArgs e)
{
tvSimple.ExpandAll();
}
private void cmdCollapseAll_Click(object sender, System.EventArgs e)
{
tvSimple.CollapseAll();
}
private void OnExpandNode(object sender, System.EventArgs e)
{
TreeNode tn = tvSimple.SelectedNode;
if (null == tn) return;
tn.ExpandAll();
}
private void OnCollapseNode(object sender, System.EventArgs e)
{
TreeNode tn = tvSimple.SelectedNode;
if (null == tn) return;
tn.Collapse();
}
}
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