WPF中的事件及冒泡事件和隧道事件（预览事件）的区别

<Border Height="50" Width="250" BorderBrush="Gray" BorderThickness="1" >
<StackPanel Background="LightGray" Orientation="Horizontal" MouseUp="StackPanel_MouseUp">
<TextBlock Name="YesTB" Width="50" MouseUp="YesTB_MouseUp" Background="Blue" >Yes</TextBlock>
</StackPanel>
</Border>

private void StackPanel_MouseUp(object sender, MouseButtonEventArgs e)
{
MessageBox.Show("Panel");
} private void YesTB_MouseUp(object sender, MouseButtonEventArgs e)
{
MessageBox.Show("button");
e.Handled = true;
}

public class MyButtonSimple: Button
{
// Create a custom routed event by first registering a RoutedEventID
// This event uses the bubbling routing strategy
public static readonly RoutedEvent TapEvent = EventManager.RegisterRoutedEvent(
"Tap", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyButtonSimple)); // Provide CLR accessors for the event
public event RoutedEventHandler Tap
{
add { AddHandler(TapEvent, value); }
remove { RemoveHandler(TapEvent, value); }
} // This method raises the Tap event
void RaiseTapEvent()
{
RoutedEventArgs newEventArgs = new RoutedEventArgs(MyButtonSimple.TapEvent);
RaiseEvent(newEventArgs);
}
// For demonstration purposes we raise the event when the MyButtonSimple is clicked
protected override void OnClick()
{
RaiseTapEvent();
}}

<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:custom="clr-namespace:SDKSample;assembly=SDKSampleLibrary"
x:Class="SDKSample.RoutedEventCustomApp" >
<Window.Resources>
<Style TargetType="{x:Type custom:MyButtonSimple}">
<Setter Property="Height" Value="20"/>
<Setter Property="Width" Value="250"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="Background" Value="#808080"/>
</Style>
</Window.Resources>
<StackPanel Background="LightGray">
<custom:MyButtonSimple Name="mybtnsimple" Tap="TapHandler">Click to see Tap custom event work</custom:MyButtonSimple>
</StackPanel>
</Window>