<EventTrigger RoutedEvent="Rectangle.Loaded">这个有关问题

<EventTrigger RoutedEvent="Rectangle.Loaded">这个问题

<Grid.Triggers>
            <EventTrigger RoutedEvent="Grid.Loaded">
                <BeginStoryboard>
                    <Storyboard>
                        <ColorAnimation To="Red" Duration="00:00:01" Storyboard.TargetName="LayoutRoot" Storyboard.TargetProperty="Background"></ColorAnimation>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </Grid.Triggers>

上面代码中界面加载完毕就执行动画了，RoutedEvent貌似不支持其他事件额，要是我想点击的时候才执行动画用上面那种方式要怎么做？
[解决办法]
type.eventName

RoutedEvent 类

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