如何为边框提供外发光效果?
<Grid Width="200" Height="200">
<Grid.Background>
<RadialGradientBrush Center="0.5,0.5" GradientOrigin="0.5,0.5" RadiusX="0.8" RadiusY="0.8">
<RadialGradientBrush.GradientStops>
<GradientStop Offset="0" Color="#FF123B5F" />
<GradientStop Offset="1" Color="#FF001F31" />
</RadialGradientBrush.GradientStops>
</RadialGradientBrush>
</Grid.Background>
<Border Width="180" Height="180" Margin="10" Background="Transparent"
BorderBrush="White" BorderThickness="1">
<Border.BitmapEffect>
<OuterGlowBitmapEffect GlowColor="White" GlowSize="3" Opacity="1" />
</Border.BitmapEffect>
</Border>
</Grid>
我已经尝试过了,但它不起作用