The Basic Operations on using the TreeView Control

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    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

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents AddParent As System.Windows.Forms.Button
    Friend WithEvents AddChild As System.Windows.Forms.Button
    Friend WithEvents DeleteNode As System.Windows.Forms.Button
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Text1 As System.Windows.Forms.TextBox
    Friend WithEvents TView As System.Windows.Forms.TreeView
    Friend WithEvents ImageList1 As System.Windows.Forms.ImageList
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form1))
        Me.TView = New System.Windows.Forms.TreeView
        Me.AddParent = New System.Windows.Forms.Button
        Me.AddChild = New System.Windows.Forms.Button
        Me.DeleteNode = New System.Windows.Forms.Button
        Me.Text1 = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.ImageList1 = New System.Windows.Forms.ImageList(Me.components)
        Me.SuspendLayout()
        '
        'TView
        '
        Me.TView.BackColor = System.Drawing.Color.IndianRed
        Me.TView.ImageIndex = -1
        Me.TView.Location = New System.Drawing.Point(24, 8)
        Me.TView.Name = "TView"
        Me.TView.SelectedImageIndex = -1
        Me.TView.Size = New System.Drawing.Size(248, 200)
        Me.TView.TabIndex = 0
        '
        'AddParent
        '
        Me.AddParent.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(255, Byte), CType(192, Byte))
        Me.AddParent.Font = New System.Drawing.Font("Palatino Linotype", 9.75!, CType((System.Drawing.FontStyle.Bold Or System.Drawing.FontStyle.Italic), System.Drawing.FontStyle), System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.AddParent.Location = New System.Drawing.Point(8, 224)
        Me.AddParent.Name = "AddParent"
        Me.AddParent.Size = New System.Drawing.Size(96, 32)
        Me.AddParent.TabIndex = 1
        Me.AddParent.Text = "Add &Parent"
        '
        'AddChild
        '
        Me.AddChild.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(255, Byte), CType(192, Byte))
        Me.AddChild.Font = New System.Drawing.Font("Palatino Linotype", 9.75!, CType((System.Drawing.FontStyle.Bold Or System.Drawing.FontStyle.Italic), System.Drawing.FontStyle), System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.AddChild.Location = New System.Drawing.Point(104, 224)
        Me.AddChild.Name = "AddChild"
        Me.AddChild.Size = New System.Drawing.Size(96, 32)
        Me.AddChild.TabIndex = 2
        Me.AddChild.Text = "Add &Child"
        '
        'DeleteNode
        '
        Me.DeleteNode.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(255, Byte), CType(192, Byte))
        Me.DeleteNode.Font = New System.Drawing.Font("Palatino Linotype", 9.75!, CType((System.Drawing.FontStyle.Bold Or System.Drawing.FontStyle.Italic), System.Drawing.FontStyle), System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.DeleteNode.Location = New System.Drawing.Point(200, 224)
        Me.DeleteNode.Name = "DeleteNode"
        Me.DeleteNode.Size = New System.Drawing.Size(96, 32)
        Me.DeleteNode.TabIndex = 3
        Me.DeleteNode.Text = "&Delete"
        '
        'Text1
        '
        Me.Text1.BackColor = System.Drawing.Color.FromArgb(CType(255, Byte), CType(255, Byte), CType(192, Byte))
        Me.Text1.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Text1.Location = New System.Drawing.Point(72, 272)
        Me.Text1.Name = "Text1"
        Me.Text1.Size = New System.Drawing.Size(208, 20)
        Me.Text1.TabIndex = 4
        Me.Text1.Text = ""
        '
        'Label1
        '
        Me.Label1.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
        Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.Location = New System.Drawing.Point(16, 272)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(48, 16)
        Me.Label1.TabIndex = 5
        Me.Label1.Text = "NODE"
        '
        'ImageList1
        '
        Me.ImageList1.ImageSize = New System.Drawing.Size(16, 16)
        Me.ImageList1.ImageStream = CType(resources.GetObject("ImageList1.ImageStream"), System.Windows.Forms.ImageListStreamer)
        Me.ImageList1.TransparentColor = System.Drawing.Color.Transparent
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.BackColor = System.Drawing.Color.FromArgb(CType(192, Byte), CType(192, Byte), CType(255, Byte))
        Me.ClientSize = New System.Drawing.Size(304, 317)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Text1)
        Me.Controls.Add(Me.DeleteNode)
        Me.Controls.Add(Me.AddChild)
        Me.Controls.Add(Me.AddParent)
        Me.Controls.Add(Me.TView)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub AddParent_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddParent.Click
        TView.Nodes.Add(Text1.Text)
    End Sub

    Private Sub AddChild_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddChild.Click
        TView.SelectedNode.Nodes.Add(Text1.Text)
    End Sub

    Private Sub DeleteNode_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DeleteNode.Click
        TView.SelectedNode.Remove()
    End Sub
End Class