WPF expander 控件怎么去掉焦点框。
一般的控件 FocusVisualStyle="{x:Null}" 可以去掉焦点框

但是expander 加上没有启作用，我怀疑是expander .header的焦点。

但是header没有 FocusVisualStyle这个属性。

请高手指点一下 。。。

我WFP 还是比较菜的。

[解决办法]
Focusable设置为false试试
[解决办法]
需要在expander 的样式里设置ToggleButton的FocusVisualStyle=="{x:Null}" 直接对expander 设置FocusVisualStyle确实不能改变折叠按钮的FocusVisualStyle
[解决办法]

探讨

需要在expander 的样式里设置ToggleButton的FocusVisualStyle=="{x:Null}" 直接对expander 设置FocusVisualStyle确实不能改变折叠按钮的FocusVisualStyle

[解决办法]
在Expander样式中的ToggleButton设置为Focusable="False"或者FocusVisualStyle=="{x:Null}"都行.其他就没办法了...

XML code

<Style TargetType="{x:Type Expander}">        <Setter Property="Background" Value="Transparent"/>        <Setter Property="Foreground" Value="{StaticResource ButtonFontColor}"/>        <Setter Property="FontWeight" Value="Bold"/>        <Setter Property="Padding" Value="4"/>        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>        <Setter Property="VerticalContentAlignment" Value="Stretch"/>        <Setter Property="BorderBrush" Value="Transparent"/>        <Setter Property="BorderThickness" Value="1"/>        <Setter Property="Template">            <Setter.Value>                <ControlTemplate TargetType="{x:Type Expander}">                    <Border SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1,1,1,1" CornerRadius="3">                        <Grid>                            <DockPanel>                                <ToggleButton [color=#FF0000]Focusable="False"[/color] FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" FocusVisualStyle="{StaticResource ExpanderHeaderFocusVisual}" Margin="1,1,1,0" MinHeight="0" MinWidth="0" x:Name="HeaderSite" Style="{StaticResource ExpanderDownHeaderStyle}" Content="{TemplateBinding Header}" ContentTemplate="{TemplateBinding HeaderTemplate}" ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" IsChecked="{Binding Path=IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" DockPanel.Dock="Top"/>                                <Border x:Name="border" Grid.Column="0" Grid.Row="1" Background="#FFFFFFFF" BorderThickness="1" CornerRadius="2" Padding="0" Visibility="Collapsed">                                    <Border.BorderBrush>                                        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">                                            <GradientStop Color="#FFABAEB3" Offset="0"/>                                            <GradientStop Color="#FFE2E8EE" Offset="0.355"/>                                        </LinearGradientBrush>                                    </Border.BorderBrush>                                    <ContentPresenter Focusable="false" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1,1,1,1" x:Name="ExpandSite" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" DockPanel.Dock="Bottom"/>                                </Border>                            </DockPanel>                            <Border x:Name="DisabledVisualElement" IsHitTestVisible="false" Background="#A5FFFFFF" Opacity="0"/>                            <Border x:Name="FocusVisualElement" IsHitTestVisible="false" BorderBrush="#00FFFFFF" BorderThickness="1" Visibility="Collapsed"/>                        </Grid>                    </Border>                    <ControlTemplate.Triggers>                        <Trigger Property="IsExpanded" Value="true">                            <Setter Property="Visibility" TargetName="border" Value="Visible"/>                        </Trigger>                        <Trigger Property="ExpandDirection" Value="Down"/>                        <Trigger Property="ExpandDirection" Value="Right">                            <Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Right"/>                            <Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Left"/>                            <Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderRightHeaderStyle}"/>                        </Trigger>                        <Trigger Property="ExpandDirection" Value="Up">                            <Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Top"/>                            <Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Bottom"/>                            <Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderUpHeaderStyle}"/>                        </Trigger>                        <Trigger Property="ExpandDirection" Value="Left">                            <Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Left"/>                            <Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Right"/>                            <Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderLeftHeaderStyle}"/>                        </Trigger>                        <Trigger Property="IsEnabled" Value="false">                            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>                            <Setter Property="Opacity" TargetName="DisabledVisualElement" Value="1"/>                        </Trigger>                    </ControlTemplate.Triggers>                </ControlTemplate>            </Setter.Value>        </Setter>    </Style>