WPF 关闭按钮

<Window x:Class="TestCloseButton.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          SizeToContent="WidthAndHeight"   WindowStyle="None"
    WindowStartupLocation="CenterScreen" ShowInTaskbar="False" 
	ResizeMode="NoResize"
    Title="MenuManagementWindow"  >
    <Window.Resources>
        <ResourceDictionary>
            <Style x:Key="TopRightCloseButtonStyle" TargetType="{x:Type ToggleButton}">
                <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
                <Setter Property="Focusable" Value="False"/>
                <Setter Property="Control.Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type ToggleButton}">
                            <Grid  >
                                <Rectangle Margin="0,0,0,0" x:Name="Rectangle" Fill="Transparent">
                                </Rectangle>
                                <Border x:Name="border" Width="32" Height="16" BorderThickness="1" CornerRadius="0,0,5,0" BorderBrush="#BDBDBD" Background="#F2f2f2">
                                    <Path x:Name="path" Fill="#FFababab" Stretch="Fill" 
                                      HorizontalAlignment="Center" Margin="0" VerticalAlignment="Center" 
                                      Width="8.708" Height="8.248" RenderTransformOrigin="0.5,0.5" 
                                      Data="M0.26855466,2.2613707 L2.9487305,2.2613707 L4.3452148,4.6837339 L5.6987305,2.2613707 L8.3520508,2.2613707 L5.902832,6.0748472 L8.5830078,10.135394 L5.8491211,10.135394 L4.296875,7.6056089 L2.7392578,10.135394 L0.021484375,10.135394 L2.7392578,6.0318785 z">
                                        <Path.RenderTransform>
                                            <TransformGroup>
                                                <ScaleTransform/>
                                                <SkewTransform/>
                                                <RotateTransform/>
                                                <TranslateTransform/>
                                            </TransformGroup>
                                        </Path.RenderTransform>
                                    </Path>
                                </Border>
                            </Grid>
                            <ControlTemplate.Triggers>
                                <Trigger Property="IsMouseOver" Value="true">
                                    <Setter Property="Background" TargetName="border" Value="#FFFFFF">
                                    </Setter>
                                </Trigger>
                                <Trigger Property="IsPressed" Value="true">
                                    <Setter Property="Background" TargetName="border">
                                        <Setter.Value>
                                            <!-- PressedBrush is used for Pressed in Button, Radio Button, CheckBox -->
                                            <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                                                <GradientStop Color="#FFF" Offset="0.0"/>
                                                <GradientStop Color="#EEE" Offset="0.1"/>
                                                <GradientStop Color="#EEE" Offset="0.9"/>
                                                <GradientStop Color="#FFF" Offset="1.0"/>
                                            </LinearGradientBrush>
                                        </Setter.Value>
                                    </Setter>
                                </Trigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>

            <SolidColorBrush x:Key="MainWindowBorderBrush" Color="#6c6c6c"/>
            <LinearGradientBrush x:Key="TitleBackgroundBrush" EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#3a4d6b" Offset="0"/>
                <GradientStop Color="#364b70" Offset="1"/>
            </LinearGradientBrush>
            <LinearGradientBrush x:Key="AppBackgroundBrush" EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#5f5f5f" Offset="0"/>
                <GradientStop Color="#5b5b5b" Offset="1"/>
            </LinearGradientBrush>

            <LinearGradientBrush x:Key="TitleAeraBackgroundBrush" EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#cfcfcf" Offset="0"/>
                <GradientStop Color="#9c9c9c" Offset="1"/>
            </LinearGradientBrush>

            <LinearGradientBrush x:Key="TitleAeraBackgroundBrushReverse" EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#9c9c9c" Offset="0"/>
                <GradientStop Color="#cfcfcf" Offset="1"/>
            </LinearGradientBrush>
        </ResourceDictionary>
    </Window.Resources>
    <Grid x:Name="layoutRoot" Height="640" Width="800">
        <Grid x:Name="gridMain" Background="{x:Null}" Margin="0,0,0,0"  VerticalAlignment="Stretch">
            <Grid.RowDefinitions>
                <RowDefinition Height="auto" ></RowDefinition>
                <RowDefinition Height="auto" ></RowDefinition>
                <RowDefinition Height="*"></RowDefinition>
            </Grid.RowDefinitions>
            <Border Grid.RowSpan="3" CornerRadius="4"  BorderBrush="{StaticResource MainWindowBorderBrush}" BorderThickness="1" >

            </Border>
            <ToggleButton Height="16" Width="32" Grid.Row="1" x:Name="closeButton"
                            
                            Style="{DynamicResource
                            TopRightCloseButtonStyle}" />
        </Grid>
    </Grid>
</Window>