docs-desktop/dotnet-desktop-guide/net/wpf/events/snippets/object-lifetime-events/vb/MainWindow.xaml

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:custom="clr-namespace:CodeSampleVb"
    Title="Object lifetime events" Height="100" Width="300">

    <!--<LifetimeEventsXaml>-->
    <Canvas x:Name="canvas">
        <StackPanel x:Name="outerStackPanel" Initialized="InitHandler" Loaded="LoadHandler" Unloaded="UnloadHandler">
            <custom:ComponentWrapper x:Name="componentWrapper" Initialized="InitHandler" Loaded="LoadHandler" Unloaded="UnloadHandler">
                <TextBox x:Name="textBox1" Initialized="InitHandler" Loaded="LoadHandler" Unloaded="UnloadHandler" />
                <TextBox x:Name="textBox2" Initialized="InitHandler" Loaded="LoadHandler" Unloaded="UnloadHandler" />
            </custom:ComponentWrapper>
        </StackPanel>
        <Button Content="Remove canvas child elements" Click="Button_Click"/>
    </Canvas>
    <!--</LifetimeEventsXaml>-->

</Window>