Add and remove tree nodes : TreeView « GUI « VB.Net Tutorial

1. VB.Net Tutorial
2. GUI
3. TreeView

Imports System.Windows.Forms

public class TreeViewAddDeleteItem
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Inherits System.Windows.Forms.Form

    Public Sub New()
        MyBase.New()

        InitializeComponent()

    End Sub

    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    Private components As System.ComponentModel.IContainer

    Friend WithEvents TreeView1 As System.Windows.Forms.TreeView
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.TreeView1 = New System.Windows.Forms.TreeView
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'TreeView1
        '
        Me.TreeView1.ImageIndex = -1
        Me.TreeView1.Location = New System.Drawing.Point(48, 16)
        Me.TreeView1.Name = "TreeView1"
        Me.TreeView1.Nodes.AddRange(New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("a", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Visual Basic"), New System.Windows.Forms.TreeNode("Visual C++"), New System.Windows.Forms.TreeNode("Delphi"), New System.Windows.Forms.TreeNode("Java")}), New System.Windows.Forms.TreeNode("B", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("B1"), New System.Windows.Forms.TreeNode("B2"), New System.Windows.Forms.TreeNode("B3"), New System.Windows.Forms.TreeNode("B4")})})
        Me.TreeView1.SelectedImageIndex = -1
        Me.TreeView1.Size = New System.Drawing.Size(200, 168)
        Me.TreeView1.TabIndex = 0
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(48, 200)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(80, 24)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Add"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(176, 200)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(80, 24)
        Me.Button2.TabIndex = 2
        Me.Button2.Text = "Delete"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 238)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TreeView1)
        Me.ResumeLayout(False)

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim str As New TreeNode

        TreeView1.SelectedNode.Nodes.Add("New")
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        TreeView1.Nodes.Remove(TreeView1.SelectedNode)
    End Sub
End Class

14.42.TreeView
	14.42.1.	Creating Tree Views in Code
	14.42.2.	Add and remove tree nodes
	14.42.3.	Build file tree recursively
	14.42.4.	Using a TreeView to display the directory structure
	14.42.5.	Tree Node selection event
	14.42.6.	TreeView CheckBox