<StackPanel xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<GroupBox  Name="groupBox1" Width="240">
			<GroupBox.Header>
				<StackPanel Orientation="Horizontal">
					<Label Content="Wybierz opcję"/>
					<CheckBox Name="wylaczone" VerticalAlignment="Center" />
				</StackPanel>
			</GroupBox.Header>
			<StackPanel >
				<RadioButton Content="Opcja1" IsEnabled="{Binding ElementName=wylaczone, Path=IsChecked}" />
				<RadioButton Content="Opcja2" IsEnabled="{Binding ElementName=wylaczone, Path=IsChecked}"/>
				<RadioButton Content="Opcja3" IsEnabled="{Binding ElementName=wylaczone, Path=IsChecked}"/>
				<Expander Width="240">
					<StackPanel >
						<RadioButton Content="Dodatkowa opcja1" />
						<RadioButton Content="Dodatkowa opcja2" />
						<RadioButton Content="Dodatkowa opcja3" />
					</StackPanel >
				</Expander>
			</StackPanel >
		</GroupBox>
	</StackPanel>
