wpf的毛边窗体效果 前台代码

<Window x:Class="wpfwindowsmove.毛边窗体"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="毛边窗体" Height="300" Width="300"
AllowsTransparency="True" WindowStyle="None" Background="Transparent"
>
<Grid>
<Border BorderThickness="1" CornerRadius="50">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Green" Offset="0"></GradientStop>
<GradientStop Color="Blue" Offset="1"></GradientStop>
<GradientStop Color="Yellow"></GradientStop>
</LinearGradientBrush>
</Border.Background>
<Border.BitmapEffect>
<BlurBitmapEffect></BlurBitmapEffect>
</Border.BitmapEffect>

</Border>
</Grid>
</Window>