<Style x:key="BaseStyle" TargetType="Button">

    <Setter Property="Background" Value="White">

</Style>

<Style x:key="RedStyle"  BaseOn="{StaticResource BaseStyle}" TargetType="Button">

    <Setter Property="Foreground" Value="Red" />

</Style>

<Style x:key="BludStyle" BaseOn="{StaticResource BaseStyle}" TargetType="Button">

    <Setter Property="Foreground" Value="Blue" />

</Style>

<!-- 如果不指定Target，设置Property时需要使用Control. -->

<Style x:key="BaseTyle">

    <Setter Property="Control.Background" value="Black" />

</Style>

<Style x:key="RedStyle"  BaseOn="{StaticResource BaseStyle}" TargetType="Button">

    <Setter Property="Foreground" Value="Red" />

</Style>

<Style x:key="BludStyle" BaseOn="{StaticResource BaseStyle}" TargetType="TextBox">

    <Setter Property="Foreground" Value="Blue" />

</Style>

<!-- 继承基础样式 -->

<Style TargetType="TextBlock" BasedOn="{StaticResource {x:Type TextBlock}}">