WPF_Practice/PacticeSolution/RoutedEventSample/MainWindow.xaml

<Window x:Class="RoutedEventSample.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:RoutedEventSample"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800"
        ButtonBase.Click="Window_Click"
        PreviewMouseDown="Window_PreviewMouseDown">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <TextBlock Grid.Row="0" FontSize="18" FontWeight="Bold" HorizontalAlignment="Center" Text="Bubbling Sample"/>
        <StackPanel x:Name="spBubbling" Margin="20" ButtonBase.Click="spBubbling_Click">
            <StackPanel Margin="10">
                <TextBlock x:Name="tb1" Margin="5" HorizontalAlignment="Center"
                           Text="This is TextBox1"/>
                <TextBlock x:Name="tb2" Margin="5" HorizontalAlignment="Center"
                           Text="This is TextBox2"/>
                <TextBlock x:Name="tb3" Margin="5" HorizontalAlignment="Center"
                           Text="This is TextBox3"/>
            </StackPanel>
            <Button x:Name="btnBubbling" Width="80" Margin="10" Content="Click me" Click="btnBubbling_Click"/>
        </StackPanel>

        <TextBlock Grid.Row="3" FontSize="18" FontWeight="Bold" HorizontalAlignment="Center" Text="Tunneling Sample"/>
        <StackPanel Grid.Row="4" x:Name="spTunneling" Width="200" Height="120" HorizontalAlignment="Center" VerticalAlignment="Center" Background="Transparent"
                    PreviewMouseDown="spTunneling_PreviewMouseDown">
            <Border VerticalAlignment="Top" Margin="20" Padding="5" Background="Bisque"
                    BorderBrush="PaleVioletRed" BorderThickness="3 5 3 5"
                    CornerRadius="5">
                <Button x:Name="btnTunneling" Width="50" Height="50" Margin="15"
                        PreviewMouseDown="btnTunneling_PreviewMouseDown"/>
            </Border>
        </StackPanel>
    </Grid>
</Window>