Private Sub ListView1_ItemActivate(sender as Object, e as EventArgs) _ 
     Handles ListView1.ItemActivate

   MessageBox.Show("You are in the ListView.ItemActivate event.")

End Sub

' 导入命名空间
Imports System.Windows.Forms

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


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 TreeView1 As System.Windows.Forms.TreeView
  Friend WithEvents Splitter1 As System.Windows.Forms.Splitter
  Friend WithEvents ListView1 As System.Windows.Forms.ListView
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container()
Me.TreeView1 = New System.Windows.Forms.TreeView()
Me.Splitter1 = New System.Windows.Forms.Splitter()
Me.ListView1 = New System.Windows.Forms.ListView()
Me.SuspendLayout()
'
'TreeView1
'
Me.TreeView1.Dock = System.Windows.Forms.DockStyle.Left
Me.TreeView1.Name = "TreeView1"
Me.TreeView1.Nodes.AddRange(New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Letter", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("a", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("z"), New System.Windows.Forms.TreeNode("b")}), New System.Windows.Forms.TreeNode("c", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("d"), New System.Windows.Forms.TreeNode("e")})})})
Me.TreeView1.Size = New System.Drawing.Size(121, 273)
Me.TreeView1.TabIndex = 0
'
'Splitter1
'
Me.Splitter1.Location = New System.Drawing.Point(121, 0)
Me.Splitter1.Name = "Splitter1"
Me.Splitter1.Size = New System.Drawing.Size(3, 273)
Me.Splitter1.TabIndex = 1
Me.Splitter1.TabStop = False
'
'ListView1
'
Me.ListView1.Dock = System.Windows.Forms.DockStyle.Fill
Me.ListView1.Location = New System.Drawing.Point(124, 0)
Me.ListView1.Name = "ListView1"
Me.ListView1.Size = New System.Drawing.Size(168, 273)
Me.ListView1.TabIndex = 2
Me.ListView1.View = System.Windows.Forms.View.List
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.ListView1, Me.Splitter1, Me.TreeView1})
Me.Name = "Form1"
Me.Text = "Vehicle Hierarchy"
Me.ResumeLayout(False)

   End Sub

#End Region

  Private Sub TreeView1_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect
         select case e.Node.Text
            case "a"
               listView1.Clear()
               listView1.Items.Add("a",3)
               listView1.Items.Add("b", 4)
               listView1.Items.Add("c", 6)
            case "b"
               listView1.Clear()
               listView1.Items.Add("a", 1)
               listView1.Items.Add("b", 2)
               listView1.Items.Add("c", 5)
         end select
  End Sub

  Private Sub ListView1_ItemActivate(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListView1.ItemActivate
      dim strItem as String = listView1.FocusedItem.Text
      Console.WriteLine(strItem)
  End Sub
End Class