Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ListBoxMultiSelectionIndex
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 TextBox1 As System.Windows.Forms.TextBox
Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.TextBox1 = New System.Windows.Forms.TextBox
Me.TextBox2 = New System.Windows.Forms.TextBox
Me.SuspendLayout()
'
'TextBox1
'
Me.TextBox1.Location = New System.Drawing.Point(8, 184)
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(272, 20)
Me.TextBox1.TabIndex = 0
Me.TextBox1.Text = ""
'
'TextBox2
'
Me.TextBox2.Location = New System.Drawing.Point(8, 240)
Me.TextBox2.Name = "TextBox2"
Me.TextBox2.Size = New System.Drawing.Size(272, 20)
Me.TextBox2.TabIndex = 1
Me.TextBox2.Text = ""
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.Add(Me.TextBox2)
Me.Controls.Add(Me.TextBox1)
Me.ResumeLayout(False)
ListBox1 = New ListBox
ListBox1.Size = New Size(270, 100)
ListBox1.Location = New Point(10, 60)
AddHandler ListBox1.SelectedIndexChanged, AddressOf ListBox1_SelectedIndexChanged
Me.Controls.Add(ListBox1)
ListBox1.MultiColumn = True
ListBox1.SelectionMode = SelectionMode.MultiExtended
For i As Integer = 0 To 19
ListBox1.Items.Add("Item " & i.ToString())
Next i
ListBox1.SetSelected(2, True)
ListBox1.SetSelected(4, True)
ListBox1.SetSelected(8, True)
ListBox1.SetSelected(10, True)
End Sub
#End Region
Dim ListBox1 As ListBox
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim Item As String
Dim Index As Integer
TextBox2.Text = "Here are the selected indices: "
For Each Index In ListBox1.SelectedIndices
TextBox2.Text &= Index.ToString() & " "
Next
End Sub
End Class
