About Dialog with Tree Walking : UI Element « Windows Presentation Foundation « VB.Net Tutorial

1. VB.Net Tutorial
2. Windows Presentation Foundation
3. UI Element

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  x:Class="AboutDialog" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="About WPF Unleashed" SizeToContent="WidthAndHeight"
  Background="OrangeRed">
  <StackPanel>
  <Label FontWeight="Bold" FontSize="20" Foreground="White">
    WPF
  </Label>
  <Label>License</Label>
  <Label>Installed Dll:</Label>
  <ListBox>
      <ListBoxItem>1</ListBoxItem>
      <ListBoxItem>2</ListBoxItem>
      <ListBoxItem>3</ListBoxItem>
      <ListBoxItem>4</ListBoxItem>
      <ListBoxItem>5</ListBoxItem>
      <ListBoxItem>6</ListBoxItem>
      <ListBoxItem>7</ListBoxItem>
      <ListBoxItem>8</ListBoxItem>
      <ListBoxItem>9</ListBoxItem>

  </ListBox>
  <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
    <Button MinWidth="75" Margin="10">Help</Button>
    <Button MinWidth="75" Margin="10">OK</Button>
  </StackPanel>
  <StatusBar>text</StatusBar>
  </StackPanel>
</Window>
//File:Window.xaml.vb

Imports System
Imports System.Diagnostics
Imports System.Windows
Imports System.Windows.Media

Public Partial Class AboutDialog
  Inherits Window
  Public Sub New()
    InitializeComponent()
  End Sub

  Protected Overrides Sub OnContentRendered(e As EventArgs)
    MyBase.OnContentRendered(e)
    PrintVisualTree(Me)
  End Sub
  Private Sub PrintVisualTree(obj As DependencyObject)
    Debug.WriteLine(obj)
    For i As Integer = 0 To VisualTreeHelper.GetChildrenCount(obj) - 1
      PrintVisualTree(VisualTreeHelper.GetChild(obj, i))
    Next
  End Sub
End Class

16.50.UI Element
	16.50.1.	Find enclosure component
	16.50.2.	Clear locally set values and restore the default values of dependency properties
	16.50.3.	PresentationTraceSources.SetTraceLevel(binding,PresentationTraceLevel.High);
	16.50.4.	UI Element Mouse Clicked Events
	16.50.5.	Programmatically Extract an Element's Style with DefaultStyleKeyProperty
	16.50.6.	Print Logical Tree
	16.50.7.	Print Visual Tree
	16.50.8.	About Dialog with Tree Walking
	16.50.9.	Changing graphical elements
	16.50.10.	UIElement Count
	16.50.11.	Use Linq to get control from a container
	16.50.12.	Find inner visual element
	16.50.13.	Logical Visual Tree Sample
	16.50.14.	Point Hit Test with VisualTreeHelper.HitTest
	16.50.15.	Change the Visibility property of a UIElement.
	16.50.16.	Mixing graphics with Control Elements