WPF单选按钮样式，用于在选定区域使用图像填充其背景

<Style x:Key="CustomRadioButtonStyle" TargetType="RadioButton">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="RadioButton">
                <Grid>
                    <Image x:Name="BackgroundImage" Source="path_to_image.png" Stretch="Fill"/>
                    <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                </Grid>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsChecked" Value="True">
                        <Setter TargetName="BackgroundImage" Property="Opacity" Value="0.5"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<RadioButton Style="{StaticResource CustomRadioButtonStyle}" Content="Option 1"/>
<RadioButton Style="{StaticResource CustomRadioButtonStyle}" Content="Option 2"/>