在样式Style中的触发器属性中设置样式值

<Style x:Key="CheckButtonSingle" TargetType="{x:Type local:CheckButton}">
	<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
	<Setter Property="Width" Value="60"/>
	<Setter Property="Height" Value="48"/>
	<Setter Property="IconWidth" Value="20"/>
	<Setter Property="IconHeight" Value="20"/>
	<Setter Property="CornerRadius" Value="0"/>
	<Setter Property="BorderThickness" Value="1"/>
	<Setter Property="Foreground" Value="#E4EFF1"/>
	<Setter Property="Background" Value="{StaticResource Primary}"/>
	<Setter Property="BorderBrush" Value="Transparent"/>
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="{x:Type local:CheckButton}">
				<Grid Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" Background="Transparent">
					<Border x:Name="Back" 
							Background="Transparent" 
							BorderBrush="{TemplateBinding BorderBrush}"
							BorderThickness="{TemplateBinding BorderThickness}"
							CornerRadius="{TemplateBinding CornerRadius}"/>
					<Image x:Name="Icon"
						   HorizontalAlignment="Center" VerticalAlignment="Center"
						   Width="{TemplateBinding IconWidth}" Height="{TemplateBinding IconHeight}"
						   Source="{TemplateBinding IconPath}"/>
				</Grid>
				<ControlTemplate.Triggers>
					<!-- 划过 -->
					<Trigger Property="IsMouseOver" Value="True">
						<Setter Property="Background" TargetName="Back" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type local:CheckButton}}}"/>
					</Trigger>
					<!-- 选中 -->
					<DataTrigger Binding="{Binding IfMore}" Value="True">
						<Setter Property="Background" TargetName="Back" Value="{Binding Path=Background, RelativeSource={RelativeSource AncestorType={x:Type local:CheckButton}}}"/>
						<Setter Property="Source" TargetName="Icon" Value="{Binding Path=SwitchIconPath, RelativeSource={RelativeSource AncestorType={x:Type local:CheckButton}}}"/>
					</DataTrigger>
					<!-- 可切换且选中 -->
					<MultiTrigger>
						<MultiTrigger.Conditions>
							<Condition Property="IsChecked" Value="True"/>
							<Condition Property="IsCanSwitch" Value="True"/>
						</MultiTrigger.Conditions>
						<Setter Property="Background" TargetName="Back" Value="{Binding Path=Background, RelativeSource={RelativeSource AncestorType={x:Type local:CheckButton}}}"/>
						<Setter Property="Source" TargetName="Icon" Value="{Binding Path=SwitchIconPath, RelativeSource={RelativeSource AncestorType={x:Type local:CheckButton}}}"/>
					</MultiTrigger>
				</ControlTemplate.Triggers>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>

例如,在trigger中设置一个属性,值是这个控件样式本身的参数,就需要使用查找,写法如下:

<Setter Property="Background" TargetName="Back" Value="{Binding Path=Background, RelativeSource={RelativeSource AncestorType={x:Type local:CheckButton}}}"/>

在指定的样式中查找这个继承类型路径即可