How to restyle a XAML radio button as a coloured label - xaml

Question

I am using the following style with a group of radiobuttons:
<Style x:Key="RadioTextStyle" TargetType="{x:Type RadioButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RadioButton}">
<Label Content="{TemplateBinding Content}" Foreground="Red"/>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Background" Value="Green"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The trigger is not executed and I assume this is because it is looking for the IsChecked property of the Label. How can I properly ensure that the label colour properly tracks the IsChecked state of the underlying RadioButton?
I am still trying many variants of this and currently have the following:
<Style x:Key="RadioTextStyle" TargetType="{x:Type RadioButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RadioButton}">
<Label x:Name="RadioLabel" Content="{TemplateBinding Content}" Foreground="Red"/>
<ControlTemplate.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IsChecked}" Value="True">
<Setter Property="Foreground" Value="Green"/>
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
This looks right to me and intellisense suggests most of the values. However, it still doesn't actually change selected labels to green.
Thanks,
Andy

Answer 1

Keep your original try. You just need to tell your trigger what it's actually changing something on with TargetName like;
<Style x:Key="RadioLabel" TargetType="{x:Type RadioButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RadioButton}">
<Label x:Name="RadioLabel"
Content="{TemplateBinding Content}" Foreground="Red"/>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="RadioLabel"
Property="Background" Value="Green"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Hope this helps, cheers.