Select All and unselect all : ListBox « Windows Presentation Foundation « VB.Net

1. VB.Net
2. Windows Presentation Foundation
3. ListBox

Select All and unselect all

      

<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:src="clr-namespace:ListBoxEvent"  
    x:Class="ListBoxEvent.Pane1">
  <Canvas.Resources>
    <src:myColors x:Key="Colors"/>
  </Canvas.Resources>

    <StackPanel Margin="10, 10, 3, 3">
      <ListBox Name="myListBox" HorizontalAlignment="Left" SelectionMode="Extended" 
            Width="265" Height="55"
            ItemsSource="{Binding Source={StaticResource Colors}}" IsSynchronizedWithCurrentItem="true">
      </ListBox>
      <StackPanel Orientation="Horizontal" Margin="10">
        <Button Content="_Select all" Click="selectAll_Click"/>
        <Button Content="_Unselect all" Click="unselectAll_Click"/>
      </StackPanel>
    </StackPanel>


</Canvas>
//File:Window.xaml.vb

Imports System
Imports System.ComponentModel
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Documents
Imports System.Windows.Navigation
Imports System.Windows.Shapes
Imports System.Windows.Data
Imports System.Windows.Media
Imports System.Collections.ObjectModel

Namespace ListBoxEvent
  Public Class myColors
    Inherits ObservableCollection(Of String)
    Public Sub New()
      Add("LightBlue")
      Add("Pink")
      Add("Red")
      Add("Purple")
      Add("Blue")
      Add("Green")
    End Sub
  End Class
  Public Partial Class Pane1
    Inherits Canvas
    Public Sub New()
      MyBase.New()
      InitializeComponent()
    End Sub
    Private Sub selectAll_Click(sender As Object, e As RoutedEventArgs)
      myListBox.SelectAll()
    End Sub

    Private Sub unselectAll_Click(sender As Object, e As RoutedEventArgs)
      myListBox.UnselectAll()
    End Sub
  End Class

End Namespace

   
    
    
    
    
    
  

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