WPF how to pass events to sibling elements

Question

I have read the post http://stackoverflow.com/questions/2982168/button-mousedown In continuation to that I want to ask 1 more question. My XAML is as follows :

    <Window.Resources>
    <Style TargetType="{x:Type ContentControl}">
        <Setter Property="BorderThickness" Value="5" />
        <Setter Property="Padding" Value="10" />
        <Setter Property="Background" Value="PaleGreen" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ContentControl}">
                    <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}">
                        <ContentPresenter/>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

<StackPanel Tag="Panel" PreviewMouseDown="PreviewMouseDown" MouseDown="MouseDown">
    <ContentControl BorderBrush="Red" Tag="C1" PreviewMouseDown="PreviewMouseDown" MouseDown="MouseDown">
        <ContentControl BorderBrush="Green" Tag="C2" PreviewMouseDown="PreviewMouseDown" MouseDown="MouseDown">
            <StackPanel Tag="Panel2" PreviewMouseDown="PreviewMouseDown" MouseDown="MouseDown">
                <ContentControl Content="Click Me" BorderBrush="Blue" Tag="C3" PreviewMouseDown="PreviewMouseDown" MouseDown="MouseDown"/>
                <ContentControl Content="Click Me2" BorderBrush="Blue" Tag="C33" PreviewMouseDown="PreviewMouseDown" MouseDown="MouseDown"/>
            </StackPanel>
        </ContentControl>
    </ContentControl>
</StackPanel>

My cs is as follows :

        private void PreviewMouseDown(object sender, MouseButtonEventArgs e)
    {
        Debug.WriteLine(((FrameworkElement) sender).Tag + " Preview");
    }

    private void MouseDown(object sender, MouseButtonEventArgs e)
    {
        Debug.WriteLine(((FrameworkElement) sender).Tag + " Bubble");
    }

How can I transfer mouse up/down events from C3 to C33? Basically I want all events from 1 sibling to reach other too.

Answer 1

From C3's EventHandler you can call C33's RaiseEvent method:

private void C3_MouseDown(object sender, MouseButtonEventArgs e)
{
  C33.RaiseEvent(e);
}

As an aside, I notice that you are using Tag to name your elements. A much more appropriate property to use for this would be the Name property. A general rule is that the use of the Tag property is only appropriate in roughtly 0.001% of WPF programs (1 in 100,000). In all cases where it is commonly used there is a much better way to do the same thing.