wpf 去除按钮点击时会画一个点线的矩形

wpf 去除按钮点击时会画一个点线的矩形

最近在研究wpf，啥都不懂，特把自己查到的有用东西，收集一下：
<Page
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
>
<Page.Resources>
<Style x:Key="MyFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="-2" StrokeThickness="0" Stroke="Red" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
<StackPanel Background="Ivory" Orientation="Horizontal">
<Canvas Width="10"/>
<Button Width="100" Height="30" FocusVisualStyle="{DynamicResource MyFocusVisual}">
Focus Here</Button>
<Canvas Width="100"/>
<Button Width="100" Height="30" FocusVisualStyle="{DynamicResource MyFocusVisual}">
Focus Here</Button>
</StackPanel>
</Page>

或者FocusVisualStyle="{x:Null}"