Button 模板和样式

    <Style TargetType="{x:Type Button}">
        <Setter Property="FontFamily" Value="Microsoft YaHei"/>
        <Setter Property="FontSize" Value="12"/>
        <Setter Property="BorderThickness"  Value="1"/>
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
        <Setter Property="Background" Value="{DynamicResource ButtonBackground}"/>
        <Setter Property="BorderBrush" Value="{DynamicResource ButtonBorder}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Foreground" Value="{DynamicResource ButtonText}"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Padding" Value="16,3,16,5"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <Border x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
                        <ContentPresenter x:Name="Presenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="Foreground" Value="{DynamicResource ButtonTextDisabled}"/>
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Background" Value="{DynamicResource ButtonBackgroundHover}"/>
                            <Setter Property="BorderBrush" Value="{DynamicResource ButtonBorderHover}"/>
                            <Setter Property="Foreground" Value="{DynamicResource ButtonTextHover}"/>
                        </Trigger>
                        <Trigger Property="IsPressed" Value="True">
                            <Setter Property="Background" Value="{DynamicResource ButtonBackgroundPressed}"/>
                            <Setter Property="BorderBrush" Value="{DynamicResource ButtonBorderPressed}"/>
                            <Setter Property="Foreground" Value="{DynamicResource ButtonTextPressed}"/>
                        </Trigger>
                        <Trigger Property="IsFocused" Value="True">
                            <Setter Property="BorderBrush" TargetName="Chrome" Value="{DynamicResource Accent}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

其中

<第5行>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>

这个 Property 设置的是当有焦点时显示的样式，Value 设置为 x:Null 代表不会有任何改变，当然你也可以自己写一个。

应用

<Button Content="button" Height="23" Width="75"/>
<Button Content="Disabled" IsEnabled="False" Height="23" Width="75"/>

引用：

https://msdn.microsoft.com/zh-cn/library/ms753328(v=vs.110).aspx