windows phone Image checkbox

<phone:PhoneApplicationPage.Resources>
        <Style x:Key="PhoneButtonBase" TargetType="ButtonBase">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="BorderBrush" Value="{StaticResource PhoneForegroundBrush}"/>
            <Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
            <Setter Property="BorderThickness" Value="{StaticResource PhoneBorderThickness}"/>
            <Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilySemiBold}"/>
            <Setter Property="FontSize" Value="{StaticResource PhoneFontSizeMediumLarge}"/>
            <Setter Property="Padding" Value="10,3,10,5"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ButtonBase">
                        <Grid Background="Transparent">
                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="CommonStates">
                                    <VisualState x:Name="Normal"/>
                                    <VisualState x:Name="MouseOver"/>
                                    <VisualState x:Name="Pressed">
                                        <Storyboard>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneBackgroundBrush}"/>
                                            </ObjectAnimationUsingKeyFrames>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneForegroundBrush}"/>
                                            </ObjectAnimationUsingKeyFrames>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="ButtonBackground">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneForegroundBrush}"/>
                                            </ObjectAnimationUsingKeyFrames>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Disabled">
                                        <Storyboard>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
                                            </ObjectAnimationUsingKeyFrames>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="ButtonBackground">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
                                            </ObjectAnimationUsingKeyFrames>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
                                            </ObjectAnimationUsingKeyFrames>
                                        </Storyboard>
                                    </VisualState>
                                </VisualStateGroup>
                            </VisualStateManager.VisualStateGroups>
                            <Border x:Name="ButtonBackground" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="0" Margin="{StaticResource PhoneTouchTargetOverhang}">
                                <ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
                            </Border>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <Style x:Key="PhoneRadioButtonCheckBoxBase" BasedOn="{StaticResource PhoneButtonBase}" TargetType="ToggleButton">
            <Setter Property="Background" Value="{StaticResource PhoneRadioCheckBoxBrush}"/>
            <Setter Property="BorderBrush" Value="{StaticResource PhoneRadioCheckBoxBrush}"/>
            <Setter Property="FontSize" Value="{StaticResource PhoneFontSizeMedium}"/>
            <Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilyNormal}"/>
            <Setter Property="HorizontalContentAlignment" Value="Left"/>
            <Setter Property="VerticalContentAlignment" Value="Center"/>
            <Setter Property="Padding" Value="0"/>
        </Style>
        <Style x:Key="CheckBoxStyle1" BasedOn="{StaticResource PhoneRadioButtonCheckBoxBase}" TargetType="CheckBox">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="CheckBox">
                        <Grid Background="Transparent">
                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="CommonStates">
                                    <VisualState x:Name="Normal"/>
                                    <VisualState x:Name="MouseOver"/>
                                    <VisualState x:Name="Pressed"/>
                                    <VisualState x:Name="Disabled"/>
                                </VisualStateGroup>
                                <VisualStateGroup x:Name="CheckStates">
                                    <VisualState x:Name="Checked">
                                        <Storyboard>
                                            <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="image1" d:IsOptimized="True"/>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Unchecked">
                                        <Storyboard>
                                            <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="image" d:IsOptimized="True"/>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Indeterminate"/>
                                </VisualStateGroup>
                                <VisualStateGroup x:Name="FocusStates"/>
                                <VisualStateGroup x:Name="ValidationStates"/>
                            </VisualStateManager.VisualStateGroups>
                            <Grid Margin="{StaticResource PhoneTouchTargetLargeOverhang}">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="32"/>
                                    <ColumnDefinition Width="*"/>
                                </Grid.ColumnDefinitions>
                            </Grid>
                            <Image x:Name="image" Source="/Assets/BtnIcons/cbimage1.png" HorizontalAlignment="Left" Height="35" Opacity="0" VerticalAlignment="Top" Width="35" RenderTransformOrigin="0.339,0.3">
                                <Image.RenderTransform>
                                    <CompositeTransform/>
                                </Image.RenderTransform>
                            </Image>
                            <Image x:Name="image1" Source="/Assets/BtnIcons/cbimage.png" HorizontalAlignment="Left" Height="35" Opacity="0" VerticalAlignment="Top" Width="35" RenderTransformOrigin="0.429,1.05">
                                <Image.RenderTransform>
                                    <CompositeTransform/>
                                </Image.RenderTransform>
                            </Image>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </phone:PhoneApplicationPage.Resources>

通过<CheckBox Style="{StaticResource CheckBoxStyle1}"/>    使用。