Routed Events With Visual States in Silverlight 4

button.xaml

<button Style="{StaticResource ButtonStyle}"
   Height="126"
   Width="137"
   Name="button"/>

handler.cs

public MainPage()
{
    InitializeComponent();
    button.AddHandler(
        UIElement.MouseLeftButtonDownEvent,
        new MouseButtonEventHandler(this.MouseLeftButtonDown),
        true);
}