<Window.Resources>

        <Style x:Key="熊俊">

            <Style.Triggers>

                <EventTrigger RoutedEvent="ListBoxItem.MouseEnter">

                    <EventTrigger.Actions>

                        <BeginStoryboard >

                            <Storyboard>

                                <DoubleAnimation Storyboard.TargetProperty="FontSize" To="30" Duration="0:0:0.2" />

                            </Storyboard>

                        </BeginStoryboard>

                    </EventTrigger.Actions>

                </EventTrigger>

                <EventTrigger RoutedEvent="ListBoxItem.MouseLeave">

                    <EventTrigger.Actions>

                        <BeginStoryboard HandoffBehavior="SnapshotAndReplace">

                            <Storyboard>

                                <DoubleAnimation Storyboard.TargetProperty="FontSize" BeginTime="0:0:0.5" Duration="0:0:0.2" />

                            </Storyboard>