How can i make Storyboard.TargetProperty=“Width” From 100 To fullscreen to adapt all screen

Question

How can I make Storyboard.TargetProperty=“Width” From 100 To fullscreen to adapt all screen?

I want to set it to fullscreen, not 500.

<Window.Triggers>
    <EventTrigger RoutedEvent="Window.Loaded" >
        <BeginStoryboard>
            <Storyboard>
                <DoubleAnimation Duration="00:00:02" Storyboard.TargetProperty="Width" From="500"  To="100" />
            </Storyboard>
        </BeginStoryboard>
    </EventTrigger>
</Window.Triggers>

Answer 1

代替500使用

{Binding Source={x:Static SystemParameters.FullPrimaryScreenWidth}}