WPF外发光按钮的实现(转)

<Window.Resources>
        <Style TargetType="{x:Type Button}">
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <!--Setter Property="Background" Value="Orange"></Setter-->
                    <Setter Property="BitmapEffect">
                        <Setter.Value>
                            <OuterGlowBitmapEffect GlowSize="20" Noise=".3" GlowColor="Red"></OuterGlowBitmapEffect>
                        </Setter.Value>
                    </Setter>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>

    <Grid x:Name="LayoutRoot">
        <Button x:Name="button" Margin="200,160,240,182" Content="Button" MouseEnter="button_MouseEnter">
        </Button>
    </Grid>