ControlTemplate in WPF —— RadioButton

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

  <ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="Shared.xaml" />
  </ResourceDictionary.MergedDictionaries>

  <!-- Focus Visual -->

<!--<SnippetRadioButtonFocusVisual>-->
  <Style x:Key="RadioButtonFocusVisual">
    <Setter Property="Control.Template">
      <Setter.Value>
        <ControlTemplate>
          <Border>
            <Rectangle Margin="15,0,0,0"
                       StrokeThickness="1"
                       Stroke="#60000000"
                       StrokeDashArray="1 2" />
          </Border>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>
<!--</SnippetRadioButtonFocusVisual>-->

  <!--<SnippetRadioButton>-->
  <Style x:Key="{x:Type RadioButton}"
         TargetType="{x:Type RadioButton}">
    <Setter Property="SnapsToDevicePixels"
            Value="true" />
    <Setter Property="OverridesDefaultStyle"
            Value="true" />
    <Setter Property="FocusVisualStyle"
            Value="{DynamicResource RadioButtonFocusVisual}" />
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="{x:Type RadioButton}">
          <BulletDecorator Background="Transparent">
            <BulletDecorator.Bullet>
              <Grid Width="13"
                    Height="13">
                <Ellipse x:Name="Border"
                         StrokeThickness="1">
                  <Ellipse.Stroke>
                    <LinearGradientBrush EndPoint="0.5,1"
                                         StartPoint="0.5,0">
                      <GradientStop Color="{DynamicResource BorderLightColor}"
                                    Offset="0" />
                      <GradientStop Color="{DynamicResource BorderDarkColor}"
                                    Offset="1" />
                    </LinearGradientBrush>
                  </Ellipse.Stroke>
                  <Ellipse.Fill>
                    <LinearGradientBrush StartPoint="0,0"
                                         EndPoint="0,1">
                      <LinearGradientBrush.GradientStops>
                        <GradientStopCollection>
                          <GradientStop Color="{DynamicResource ControlLightColor}" />
                          <GradientStop Color="{DynamicResource ControlMediumColor}"
                                        Offset="1.0" />
                        </GradientStopCollection>
                      </LinearGradientBrush.GradientStops>
                    </LinearGradientBrush>
                  </Ellipse.Fill>
                </Ellipse>
                <Ellipse x:Name="CheckMark"
                         Margin="4"
                         Visibility="Collapsed">
                  <Ellipse.Fill>
                    <SolidColorBrush Color="{DynamicResource GlyphColor}" />
                  </Ellipse.Fill>
                </Ellipse>
              </Grid>
            </BulletDecorator.Bullet>
            <VisualStateManager.VisualStateGroups>
              <VisualStateGroup x:Name="CommonStates">
                <VisualState x:Name="Normal" />
                <VisualState x:Name="MouseOver">
                  <Storyboard>
                    <ColorAnimationUsingKeyFrames Storyboard.TargetName="Border"
                                                  Storyboard.TargetProperty="(Shape.Fill).
                      (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                      <EasingColorKeyFrame KeyTime="0"
                                           Value="{StaticResource ControlMouseOverColor}" />
                    </ColorAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Pressed">
                  <Storyboard>
                    <ColorAnimationUsingKeyFrames Storyboard.TargetName="Border"
                                                  Storyboard.TargetProperty="(Shape.Fill).
                      (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                      <EasingColorKeyFrame KeyTime="0"
                                           Value="{StaticResource ControlPressedColor}" />
                    </ColorAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Disabled">
                  <Storyboard>
                    <ColorAnimationUsingKeyFrames Storyboard.TargetName="Border"
                                                  Storyboard.TargetProperty="(Shape.Fill).
                      (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                      <EasingColorKeyFrame KeyTime="0"
                                           Value="{StaticResource ControlLightColor}" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames Storyboard.TargetName="Border"
                                                  Storyboard.TargetProperty="(Shape.Stroke).
                      (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                      <EasingColorKeyFrame KeyTime="0"
                                           Value="#40000000" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames Storyboard.TargetName="Border"
                                                  Storyboard.TargetProperty="(Shape.Stroke).
                      (GradientBrush.GradientStops)[0].(GradientStop.Color)">
                      <EasingColorKeyFrame KeyTime="0"
                                           Value="#40000000" />
                    </ColorAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
              </VisualStateGroup>
              <VisualStateGroup x:Name="CheckStates">
                <VisualState x:Name="Checked">
                  <Storyboard>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)"
                                                   Storyboard.TargetName="CheckMark">
                      <DiscreteObjectKeyFrame KeyTime="0"
                                              Value="{x:Static Visibility.Visible}" />
                    </ObjectAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Unchecked" />
                <VisualState x:Name="Indeterminate" />
              </VisualStateGroup>
            </VisualStateManager.VisualStateGroups>
            <ContentPresenter Margin="4,0,0,0"
                              VerticalAlignment="Center"
                              HorizontalAlignment="Left"
                              RecognizesAccessKey="True" />
          </BulletDecorator>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>
  <!--</SnippetRadioButton>-->
</ResourceDictionary>