Change the Visibility property of a UIElement.

       

<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

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Change the Visibility property of a UIElement. : UI Element « Windows Presentation Foundation « VB.Net

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