Handles CheckBox Indeterminate events when a CheckBox changes to a indeterminate state. : CheckBox « Windows Presentation Foundation « VB.Net Tutorial

Home
VB.Net Tutorial
1.Language Basics
2.Data Type
3.Operator
4.Statements
5.Date Time
6.Class Module
7.Development
8.Collections
9.Generics
10.Attributes
11.Event
12.LINQ
13.Stream File
14.GUI
15.GUI Applications
16.Windows Presentation Foundation
17.2D Graphics
18.I18N Internationlization
19.Reflection
20.Regular Expressions
21.Security
22.Socket Network
23.Thread
24.Windows
25.XML
26.Database ADO.net
27.Design Patterns
VB.Net
VB.Net by API
VB.Net Tutorial » Windows Presentation Foundation » CheckBox 
16.11.2.Handles CheckBox Indeterminate events when a CheckBox changes to a indeterminate state.
<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="250" Width="300">
    <StackPanel Name="panel">
        <CheckBox 
                  Content="Third CheckBox (Tri-State Enabled)" 
                  Indeterminate="CheckBox_Indeterminate"  IsChecked="True" 
                  IsThreeState="True" Margin="2" Name="checkbox3" 
                  />
        <Button Content="Get Selected" Margin="5" MaxWidth="100" 
                Click="Button_Click" />
        <TextBlock FontWeight="Bold" Text="Selected CheckBoxes:" />
        <ListBox Margin="5" MinHeight="2cm" Name="listbox" />
    </StackPanel>
</Window>
//File:Window.xaml.vb
Imports System.Linq
Imports System.Windows
Imports System.Windows.Controls

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub Button_Click(sender As Object, e As RoutedEventArgs)
      listbox.Items.Clear()
      For Each checkbox As CheckBox In panel.Children.OfType(Of CheckBox)().Where(Function(cbcb.IsChecked = True)
        listbox.Items.Add(checkbox.Name)
      Next
    End Sub
    Private Sub CheckBox_Indeterminate(sender As Object, e As RoutedEventArgs)
      If Not IsInitialized Then
        Return
      End If

      Dim checkbox As CheckBox = TryCast(e.OriginalSource, CheckBox)

      If checkbox IsNot Nothing Then
        MessageBox.Show(checkbox.Name & " is indeterminate.", Title)
      End If
    End Sub

  End Class
End Namespace
WPF Handles Check Box Indeterminate Events When A Check Box Changes To A Indeterminate State
16.11.CheckBox
16.11.1.CheckBox checked event listenerCheckBox checked event listener
16.11.2.Handles CheckBox Indeterminate events when a CheckBox changes to a indeterminate state.Handles CheckBox Indeterminate events when a CheckBox changes to a indeterminate state.
16.11.3.Handle CheckBox Unchecked eventsHandle CheckBox Unchecked events
16.11.4.Handle CheckBox checked eventsHandle CheckBox checked events
16.11.5.Use Linq to get checked CheckBoxUse Linq to get checked CheckBox
16.11.6.Check the CheckBox based on key pressed statesCheck the CheckBox based on key pressed states
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.