属性动画 是通过 Storyboard 来改变属性值

       <Rectangle x:Name="rect" Width="200" Height="200" >



            <Rectangle.Fill>



                <SolidColorBrush Color="Beige" x:Name="color"></SolidColorBrush>



            </Rectangle.Fill>



            <Rectangle.Triggers>



                <EventTrigger RoutedEvent="MouseEnter">



                    <EventTrigger.Actions>



                        <BeginStoryboard>



                            <Storyboard>



                                <DoubleAnimation Duration="0:0:1" Storyboard.TargetName="rect" Storyboard.TargetProperty="Width" To="400"></DoubleAnimation>



                                <ColorAnimation Duration="0:0:1" Storyboard.TargetName="color" Storyboard.TargetProperty="Color" To="Cyan"></ColorAnimation>



                                <DoubleAnimation Duration="0:0:1" Storyboard.TargetName="rect" Storyboard.TargetProperty="Height" To="400"></DoubleAnimation>



                            </Storyboard>







                        </BeginStoryboard>



                    </EventTrigger.Actions>







                </EventTrigger>



                <EventTrigger RoutedEvent="MouseLeave">



                    <EventTrigger.Actions>



                        <BeginStoryboard>



                            <Storyboard>



                                <DoubleAnimation Duration="0:0:1" Storyboard.TargetName="rect" Storyboard.TargetProperty="Width" To="200"></DoubleAnimation>



                                <ColorAnimation Duration="0:0:1" Storyboard.TargetName="color" Storyboard.TargetProperty="Color" To="Beige"></ColorAnimation>



                                <DoubleAnimation Duration="0:0:1" Storyboard.TargetName="rect" Storyboard.TargetProperty="Height" To="200"></DoubleAnimation>







                            </Storyboard>



                        </BeginStoryboard>



                    </EventTrigger.Actions>



                </EventTrigger>



            </Rectangle.Triggers>











        </Rectangle>

WPF 精修篇 属性动画