WPF之EventTrigger

我们以定义一个TextBlock来鼠标移入/移出验证EventTrigger功能
xaml中内容如下:

<TextBlock Text="鼠标移动进来" Width="100" Height="50" Background="AliceBlue">
            <TextBlock.Triggers>
            <EventTrigger RoutedEvent="MouseEnter">
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimation To="300" Duration="0:0:1.5" 
                            AccelerationRatio="0.10" DecelerationRatio="0.25" 
                            Storyboard.TargetProperty="(Grid.Width)" />
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
            <EventTrigger RoutedEvent="MouseLeave">
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimation Duration="0:0:1.5" 
                    AccelerationRatio="0.10" DecelerationRatio="0.25" 
                    Storyboard.TargetProperty="(Grid.Width)" />   
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </TextBlock.Triggers>
 </TextBlock>