Change the Visibility property of a UIElement. : 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"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="Visibility_Layout_Samp.Window1"
    Title="UIELement.Visibility Sample">
      <DockPanel>
            <StackPanel DockPanel.Dock="Left">
                <Button Name="btn1" Height="25" Click="contentVis">Visibility="Visible"</Button>
                <Button Name="btn2" Height="25" Click="contentHid">Visibility="Hidden"</Button>
                <Button Name="btn3" Height="25" Click="contentCol">Visibility="Collapsed"</Button> 
            </StackPanel>    
            <StackPanel HorizontalAlignment="Center">
                <TextBox Name="tb1" Width="100" Height="50">A TextBox</TextBox>
                <TextBlock Name="txt1" TextWrapping="Wrap" FontSize="14"/>
            </StackPanel>
        </DockPanel>
</Window>

//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Documents

Namespace Visibility_Layout_Samp
  Public Partial Class Window1
    Inherits Window
    Public Sub contentVis(sender As Object, e As RoutedEventArgs)
      tb1.Visibility = System.Windows.Visibility.Visible
      txt1.Text = "Visibility is now set to Visible."
    End Sub

    Public Sub contentHid(sender As Object, e As RoutedEventArgs)
      tb1.Visibility = System.Windows.Visibility.Hidden
      txt1.Text = "Visibility is now set to Hidden."
    End Sub

    Public Sub contentCol(sender As Object, e As RoutedEventArgs)
      tb1.Visibility = System.Windows.Visibility.Collapsed
      txt1.Text = "Visibility is now set to Collapsed."
    End Sub
  End Class
End Namespace

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