<!--ExpanderStyle-->

            <Style x:Key="ExpanderStyleOne" TargetType="{x:Type Expander}">

                <Setter Property="Foreground" Value="#FF217cb5"/>

                <Setter Property="FontFamily" Value="宋体" />

                <Setter Property="FontSize" Value="14" />

                <Setter Property="Background" Value="Transparent"/>

                <Setter Property="HorizontalContentAlignment" Value="Stretch"/>

                <Setter Property="VerticalContentAlignment" Value="Stretch"/>

                <Setter Property="BorderBrush" Value="Transparent"/>

                <Setter Property="BorderThickness" Value="0"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type Expander}">

                            <Canvas Background="{TemplateBinding Background}" SnapsToDevicePixels="true">

                                <ToggleButton x:Name="HeaderSite"

                          Canvas.Top="0"

                          ContentTemplate="{TemplateBinding HeaderTemplate}"

                          ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}"

                          Content="{TemplateBinding Header}"

                          IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"

                          Style="{DynamicResource ToggleButtonStyleOne}"/>

                                <Border x:Name="ExpandSite"  HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                        VerticalAlignment="{TemplateBinding VerticalContentAlignment}"

                                        Visibility="Collapsed"

                                        Canvas.Top="56" Canvas.Left="0"

                                        Focusable="false"

                                        BorderBrush="{TemplateBinding BorderBrush}"

                                        BorderThickness="{TemplateBinding BorderThickness}"

                                        Width="{Binding ElementName=HeaderSite,Path=Width}"

                                        Background="#FF6a8d9c">

                                    <ContentPresenter Margin="0 0"

                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />

                                </Border>

                            </Canvas>

                            <ControlTemplate.Triggers>

                                <Trigger Property="IsExpanded" Value="False">

                                    <Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>

                                </Trigger>

                                <Trigger Property="IsEnabled" Value="false">

                                    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                                </Trigger>

                            </ControlTemplate.Triggers>

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <Style x:Key="ToggleButtonStyleOne" TargetType="{x:Type ToggleButton}">

                <Setter Property="FocusVisualStyle" Value="{x:Null}"/>

                <Setter Property="Width" Value="285"/>

                <Setter Property="Height" Value="56" />

                <Setter Property="Background" Value="{DynamicResource ReviewGridbackground}" />

                <Setter Property="Foreground" Value="#FF217cb5"/>

                <Setter Property="FontSize" Value="14" />

                <Setter Property="FontFamily" Value="宋体" />

                <Setter Property="FontWeight" Value="Bold" />

                <Setter Property="BorderThickness" Value="0"/>

                <Setter Property="HorizontalContentAlignment" Value="Left"/>

                <Setter Property="VerticalContentAlignment" Value="Center"/>

                <Setter Property="Padding" Value="0 0"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type ToggleButton}">

                            <Canvas Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                Background="{TemplateBinding Background}" SnapsToDevicePixels="True">

                                <Canvas x:Name="canvNormal" Visibility="Visible"

                                 Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                 Background="{TemplateBinding Background}" SnapsToDevicePixels="True" Canvas.Right="0">

                                    <Button Width="235" Height="56" Opacity="0"/>

                                    <Rectangle Width="15" Height="56" Fill="#4a5f6a" Canvas.Right="0"/>

                                    <Image Source="../Image/1.PNG"  Margin="235,0,0,0" Height="55"  Width="15"/>

                                    <!--<Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592L13.494,10.697z" Fill="#297eb4" Canvas.Right="4" Canvas.Top="15"/>

                            <Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592L13.494,10.697z" Fill="#297eb4" Canvas.Right="4" Canvas.Top="25"/>-->

                                    <!--<Line X1="0" Y1="0" X2="0" Y2="15" Stroke="#297eb4" StrokeThickness="3"

                                    Margin="6 10" StrokeDashArray="1" Canvas.Right="0"/>-->

                                    <!--<Rectangle Width="{TemplateBinding Width}" Height="1" Canvas.Bottom="0" Fill="#FFbacfda" />-->

                                </Canvas>

                                <Canvas x:Name="canvChecked" Visibility="Hidden"

                                 Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                 Background="{TemplateBinding Background}" SnapsToDevicePixels="True" Canvas.Right="0">

                                    <Button Width="235" Height="56" Opacity="0"/>

                                    <Rectangle Width="15" Height="56" Fill="#4a5f6a" Canvas.Right="0"/>

                                    <!--<Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592" Fill="#297eb4" Canvas.Right="4" Canvas.Top="8"/>

                                <Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592" Fill="#297eb4" Canvas.Right="4" Canvas.Top="15"/>-->

                                    <Image Source="../Image/2.PNG"  Margin="235,0,0,0"  Height="55"  Width="15"/>

                                    <!--<Rectangle Width="{TemplateBinding Width}" Height="1" Canvas.Bottom="0" Fill="#FFbacfda" />-->

                                </Canvas>

                                <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                                 Margin="{TemplateBinding Padding}"

                                                 RecognizesAccessKey="True"

                                                 SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"

                                                 VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

                            </Canvas>

                            <ControlTemplate.Triggers>

                                <!--<Trigger Property="IsPressed" Value="true">

                            <Setter Property="Background" Value="#FFd2e7f4" />

                        </Trigger>-->

                                <Trigger Property="IsChecked" Value="true">

                                    <Setter Property="Visibility" TargetName="canvChecked" Value="Visible" />

                                    <Setter Property="Visibility" TargetName="canvNormal" Value="Hidden" />

                                </Trigger>

                                <!--<Trigger Property="IsEnabled" Value="false">

                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                        </Trigger>-->

                            </ControlTemplate.Triggers>

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <Style x:Key="ExpanderStyleTwo" TargetType="{x:Type Expander}">

                <Setter Property="Foreground" Value="#FF217cb5"/>

                <Setter Property="FontFamily" Value="宋体" />

                <Setter Property="FontSize" Value="14" />

                <Setter Property="Background" Value="Transparent"/>

                <Setter Property="HorizontalContentAlignment" Value="Stretch"/>

                <Setter Property="VerticalContentAlignment" Value="Stretch"/>

                <Setter Property="BorderBrush" Value="Transparent"/>

                <Setter Property="BorderThickness" Value="0"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type Expander}">

                            <Canvas Background="{TemplateBinding Background}" SnapsToDevicePixels="true">

                                <ToggleButton x:Name="HeaderSite"

                          Canvas.Top="0"

                          ContentTemplate="{TemplateBinding HeaderTemplate}"

                          ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}"

                          Content="{TemplateBinding Header}"

                          IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"

                          Style="{DynamicResource ToggleButtonStyleTwo}"/>

                                <Border x:Name="ExpandSite"  HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                        VerticalAlignment="{TemplateBinding VerticalContentAlignment}"

                                        Visibility="Collapsed"

                                        Canvas.Top="35" Canvas.Left="0"

                                        Focusable="false"

                                        BorderBrush="{TemplateBinding BorderBrush}"

                                        BorderThickness="{TemplateBinding BorderThickness}"

                                        Width="{Binding ElementName=HeaderSite,Path=Width}"

                                        Background="#4a5f6a">

                                    <ContentPresenter Margin="0 0"

                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />

                                </Border>

                            </Canvas>

                            <ControlTemplate.Triggers>

                                <Trigger Property="IsExpanded" Value="False">

                                    <Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>

                                </Trigger>

                                <Trigger Property="IsEnabled" Value="false">

                                    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                                </Trigger>

                            </ControlTemplate.Triggers>

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <Style x:Key="ToggleButtonStyleTwo" TargetType="{x:Type ToggleButton}">

                <Setter Property="FocusVisualStyle" Value="{x:Null}"/>

                <Setter Property="Width" Value="250"/>

                <Setter Property="Height" Value="56" />

                <Setter Property="Background" Value="{DynamicResource ReviewGridbackground}" />

                <Setter Property="Foreground" Value="#FF217cb5"/>

                <Setter Property="FontSize" Value="14" />

                <Setter Property="FontFamily" Value="宋体" />

                <Setter Property="FontWeight" Value="Bold" />

                <Setter Property="BorderThickness" Value="0"/>

                <Setter Property="HorizontalContentAlignment" Value="Left"/>

                <Setter Property="VerticalContentAlignment" Value="Center"/>

                <Setter Property="Padding" Value="0 0"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type ToggleButton}">

                            <Canvas Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                Background="{TemplateBinding Background}" SnapsToDevicePixels="True">

                                <Canvas x:Name="canvNormal" Visibility="Visible"

                                 Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                 Background="{TemplateBinding Background}" SnapsToDevicePixels="True" Canvas.Right="0">

                                    <Button Width="250" Height="{TemplateBinding Height}" Opacity="0"/>

                                    <!--<Rectangle Width="15" Height="35" Fill="#FFc7ebff" Canvas.Right="0"/>-->

                                    <!--<Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592L13.494,10.697z" Fill="#297eb4" Canvas.Right="4" Canvas.Top="8"/>

                            <Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592L13.494,10.697z" Fill="#297eb4" Canvas.Right="4" Canvas.Top="15"/>-->

                                    <!--<Line X1="0" Y1="0" X2="0" Y2="15" Stroke="#297eb4" StrokeThickness="3"

                                    Margin="6 10" StrokeDashArray="1" Canvas.Right="0"/>-->

                                </Canvas>

                                <Canvas x:Name="canvChecked" Visibility="Hidden"

                                 Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                 Background="{TemplateBinding Background}" SnapsToDevicePixels="True" Canvas.Right="0">

                                    <Button Width="250" Height="{TemplateBinding Height}" Opacity="0"/>

                                    <!--<Rectangle Width="15" Height="35" Fill="#FFc7ebff" Canvas.Right="0"/>-->

                                    <!--<Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592" Fill="#297eb4" Canvas.Right="4" Canvas.Top="8"/>

                                <Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592" Fill="#297eb4" Canvas.Right="4" Canvas.Top="15"/>-->

                                    <!--<Image Source="image/1.PNG"  Margin="228,-1,0,0"/>-->

                                    <Rectangle Width="{TemplateBinding Width}" Height="1" Canvas.Bottom="0" Fill="#FFbacfda" />

                                </Canvas>

                                <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                                 Margin="{TemplateBinding Padding}"

                                                 RecognizesAccessKey="True"

                                                 SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"

                                                 VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

                            </Canvas>

                            <!--<ControlTemplate.Triggers>

                        <Trigger Property="IsPressed" Value="true">

                            <Setter Property="Background" Value="#FFd2e7f4" />

                        </Trigger>

                        <Trigger Property="IsChecked" Value="true">

                            <Setter Property="Visibility" TargetName="canvChecked" Value="Visible" />

                            <Setter Property="Visibility" TargetName="canvNormal" Value="Hidden" />

                        </Trigger>

                        <Trigger Property="IsEnabled" Value="false">

                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                        </Trigger>

                    </ControlTemplate.Triggers>-->

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <Style x:Key="ExpanderStyleThree" TargetType="{x:Type Expander}">

                <Setter Property="Foreground" Value="#FF217cb5"/>

                <Setter Property="FontFamily" Value="宋体" />

                <Setter Property="FontSize" Value="14" />

                <Setter Property="Background" Value="Transparent"/>

                <Setter Property="HorizontalContentAlignment" Value="Stretch"/>

                <Setter Property="VerticalContentAlignment" Value="Stretch"/>

                <Setter Property="BorderBrush" Value="Transparent"/>

                <Setter Property="BorderThickness" Value="0"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type Expander}">

                            <Canvas Background="{TemplateBinding Background}" SnapsToDevicePixels="true">

                                <ToggleButton x:Name="HeaderSite"

                          Canvas.Top="0"

                          ContentTemplate="{TemplateBinding HeaderTemplate}"

                          ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}"

                          Content="{TemplateBinding Header}"

                          IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"

                          Style="{DynamicResource ToggleButtonStyleThree}"/>

                                <Border x:Name="ExpandSite"  HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                        VerticalAlignment="{TemplateBinding VerticalContentAlignment}"

                                        Visibility="Collapsed"

                                        Canvas.Top="35" Canvas.Left="0"

                                        Focusable="false"

                                        BorderBrush="{TemplateBinding BorderBrush}"

                                        BorderThickness="{TemplateBinding BorderThickness}"

                                        Width="{Binding ElementName=HeaderSite,Path=Width}"

                                        Background="#4a5f6a">

                                    <ContentPresenter Margin="0 0"

                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />

                                </Border>

                            </Canvas>

                            <ControlTemplate.Triggers>

                                <Trigger Property="IsExpanded" Value="False">

                                    <Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>

                                </Trigger>

                                <Trigger Property="IsEnabled" Value="false">

                                    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                                </Trigger>

                            </ControlTemplate.Triggers>

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <Style x:Key="ToggleButtonStyleThree" TargetType="{x:Type ToggleButton}">

                <Setter Property="FocusVisualStyle" Value="{x:Null}"/>

                <Setter Property="Width" Value="250"/>

                <Setter Property="Height" Value="114" />

                <Setter Property="Background" Value="{DynamicResource ReviewGridbackground}" />

                <Setter Property="Foreground" Value="#FF217cb5"/>

                <Setter Property="FontSize" Value="14" />

                <Setter Property="FontFamily" Value="宋体" />

                <Setter Property="FontWeight" Value="Bold" />

                <Setter Property="BorderThickness" Value="0"/>

                <Setter Property="HorizontalContentAlignment" Value="Left"/>

                <Setter Property="VerticalContentAlignment" Value="Center"/>

                <Setter Property="Padding" Value="0 0"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type ToggleButton}">

                            <Canvas Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                Background="{TemplateBinding Background}" SnapsToDevicePixels="True">

                                <Canvas x:Name="canvNormal" Visibility="Visible"

                                 Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                 Background="{TemplateBinding Background}" SnapsToDevicePixels="True" Canvas.Right="0">

                                    <Button Width="250" Height="{TemplateBinding Height}" Opacity="0"/>

                                    <!--<Rectangle Width="15" Height="35" Fill="#FFc7ebff" Canvas.Right="0"/>-->

                                    <!--<Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592L13.494,10.697z" Fill="#297eb4" Canvas.Right="4" Canvas.Top="8"/>

                            <Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592L13.494,10.697z" Fill="#297eb4" Canvas.Right="4" Canvas.Top="15"/>-->

                                    <!--<Line X1="0" Y1="0" X2="0" Y2="15" Stroke="#297eb4" StrokeThickness="3"

                                    Margin="6 10" StrokeDashArray="1" Canvas.Right="0"/>-->

                                </Canvas>

                                <Canvas x:Name="canvChecked" Visibility="Hidden"

                                 Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"

                                 Background="{TemplateBinding Background}" SnapsToDevicePixels="True" Canvas.Right="0">

                                    <Button Width="250" Height="{TemplateBinding Height}" Opacity="0"/>

                                    <!--<Rectangle Width="15" Height="35" Fill="#FFc7ebff" Canvas.Right="0"/>-->

                                    <!--<Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592" Fill="#297eb4" Canvas.Right="4" Canvas.Top="8"/>

                                <Path Data="M13.494,10.697l-3.497-3.6l-3.497,3.6L6.494,8.328l3.503-3.631l3.48,3.592" Fill="#297eb4" Canvas.Right="4" Canvas.Top="15"/>-->

                                    <!--<Image Source="image/1.PNG"  Margin="228,-1,0,0"/>-->

                                    <Rectangle Width="{TemplateBinding Width}" Height="1" Canvas.Bottom="0" Fill="#4a5f6a" />

                                </Canvas>

                                <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

                                                 Margin="{TemplateBinding Padding}"

                                                 RecognizesAccessKey="True"

                                                 SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"

                                                 VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

                            </Canvas>

                            <!--<ControlTemplate.Triggers>

                        <Trigger Property="IsPressed" Value="true">

                            <Setter Property="Background" Value="#FFd2e7f4" />

                        </Trigger>

                        <Trigger Property="IsChecked" Value="true">

                            <Setter Property="Visibility" TargetName="canvChecked" Value="Visible" />

                            <Setter Property="Visibility" TargetName="canvNormal" Value="Hidden" />

                        </Trigger>

                        <Trigger Property="IsEnabled" Value="false">

                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

                        </Trigger>

                    </ControlTemplate.Triggers>-->

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

使用Expander的示例：

 <Expander Name="ExpanderTools" Style="{DynamicResource ExpanderStyleOne}" IsExpanded="True" ExpandDirection="Down">

                    <Expander.Header>

                        <Grid Name="ExpanderToolsHeaderGrid">

                            <Grid.ColumnDefinitions>

                                <ColumnDefinition Width="2"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="2"/>

                            </Grid.ColumnDefinitions>

                            <Grid.RowDefinitions>

                                <RowDefinition Height="5"/>

                                <RowDefinition Height="40"/>

                                <RowDefinition Height="5"/>

                                <RowDefinition/>

                            </Grid.RowDefinitions>

                            <ToggleButton Grid.Column="1" Grid.Row="1"  />

                            <ToggleButton Grid.Column="2" Grid.Row="1" />

                            <Button Grid.Column="3" Grid.Row="1"/>

                            <ToggleButton Grid.Column="4" Grid.Row="1" />

                            <ToggleButton Grid.Column="5" Grid.Row="1" />

                        </Grid>

                    </Expander.Header>

                    <Expander.Content>

                        <Grid Name="ExpanderToolsContentGrid" Background="#4a5f6a">

                            <Grid.ColumnDefinitions>

                                <ColumnDefinition Width="2"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="40"/>

                                <ColumnDefinition Width="2"/>

                            </Grid.ColumnDefinitions>

                            <Grid.RowDefinitions>

                                <RowDefinition Height="5"/>

                                <RowDefinition Height="40"/>

                                <RowDefinition Height="5"/>

                                <RowDefinition Height="40"/>

                                <RowDefinition Height="5"/>

                                <RowDefinition/>

                            </Grid.RowDefinitions>

                            <ToggleButton Grid.Column="1" Grid.Row="1" />

                            <ToggleButton Grid.Column="2" Grid.Row="1" />

                            <ToggleButton Grid.Column="3" Grid.Row="1" />

                            <ToggleButton Grid.Column="4" Grid.Row="1" />

                            <ToggleButton Grid.Column="5" Grid.Row="1" />

                            <ToggleButton Grid.Column="6" Grid.Row="1"/>

                            <ToggleButton Grid.Column="1" Grid.Row="3" />

                        </Grid>

                    </Expander.Content>

                </Expander>

运行效果：

需要注意的是：Expander展开后，有可能会出现Expander内容区域范围到达其他内容区域时，显示其他区域的内容，造成交叉背景显示。

此时需要将被当区域控件的 Panel.ZIndex="-1" 该值设置为负数。

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