wpf 边框的外发光效果
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Outer glow effect to border
提问by Ponraja
How to provide the outer glow effect to border?
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>
I have tried this but it not working
我试过这个，但它不起作用
回答by Fredrik Hedblad
BitmapEffectsare no longer supported in .NET 4.0.
BitmapEffects.NET 4.0 不再支持。
From MSDN
来自MSDN
Important In the .NET Framework 4 or later, the BitmapEffect class is obsolete. If you try to use the BitmapEffect class, you will get an obsolete exception. The non-obsolete alternative to the BitmapEffect class is the Effect class. In most situations, the Effect class is significantly faster.
重要 在 .NET Framework 4 或更高版本中，BitmapEffect 类已过时。如果您尝试使用 BitmapEffect 类，您将得到一个过时的异常。BitmapEffect 类的非过时替代品是 Effect 类。在大多数情况下，Effect 类要快得多。
It isn't the same thing but you can try with a DropShadowEffectwith ShadowDepthclose to 0 instead.
这不是一回事，但您可以尝试DropShadowEffect使用ShadowDepth接近 0 的 a 代替。
Example
例子
<Border Width="180" Height="180" Margin="10" Background="Transparent"
BorderBrush="White" BorderThickness="2" Opacity="1.0">
<Border.Effect>
<DropShadowEffect ShadowDepth="0"
Color="White"
Opacity="1"
BlurRadius="5"/>
</Border.Effect>
</Border>
Comparison between the BitmapEffectsyou had and DropShadowEffectabove. DropShadowEffectto the right.
在比较BitmapEffects你必须和DropShadowEffect上面。DropShadowEffect向右。
