wpf 炫彩动画效果简单实例

<Button >
            <Button.Background>
                <LinearGradientBrush>
                    <GradientStop Color="Blue" Offset="0"></GradientStop>
                    <GradientStop Color="Black" Offset="0.5"></GradientStop>
                    <GradientStop Color="Blue" Offset="1"></GradientStop>
                </LinearGradientBrush>
            </Button.Background>
            <Button.Triggers>
                <EventTrigger RoutedEvent="Button.Loaded">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard >
                                <ColorAnimation Storyboard.TargetProperty="Background.GradientStops[1].Color" From="Black" To="White" Duration="0:0:2" AutoReverse="True" RepeatBehavior="Forever">                                    
                                </ColorAnimation>
                            </Storyboard>
                        </BeginStoryboard>
                        <BeginStoryboard>
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetProperty="Background.GradientStops[1].Offset"
                                                 From="0" To="1" Duration="0:0:2" AutoReverse="True" RepeatBehavior="Forever">
                                </DoubleAnimation>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </Button.Triggers>
        </Button>

效果图变化：

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