在 wpf 的 tabpanel 中添加新按钮（添加按钮）时，TabControl 边框不隐藏

Question

在选项卡控件中，我必须将 + 按钮添加到选项卡项，如屏幕截图所示。我在选项卡面板中添加了加号按钮，当我运行程序并选择选项卡项时，选项卡控件边框不像普通选项卡控件那样隐藏。请检查随附的屏幕截图以明确我的问题。

<Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type TabControl}">
                        <Grid
                            x:Name="templateRoot"
                            ClipToBounds="true"
                            KeyboardNavigation.TabNavigation="Local"
                            SnapsToDevicePixels="true">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition x:Name="ColumnDefinition0" />
                                <ColumnDefinition x:Name="ColumnDefinition1" Width="0" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition x:Name="RowDefinition0" Height="Auto" />
                                <RowDefinition x:Name="RowDefinition1" Height="*" />
                            </Grid.RowDefinitions>
                            <StackPanel
                                x:Name="headerPanel"
                                Grid.Row="0"
                                Grid.Column="0"
                                Orientation="Horizontal">
                                <TabPanel
                                    x:Name="_HeaderPanel"
                                    Panel.ZIndex="1"
                                    IsItemsHost="true"
                                    KeyboardNavigation.TabIndex="1" />
                                <Button
                                    x:Name="addButton"
                                    Width="50"
                                    Height="30"
                                    Background="LightGray"
                                    BorderBrush="LightGray"
                                    BorderThickness="1,0,0,0"
                                    Command="{Binding ChartAddButton_Click}"
                                    Content="+" />
                            </StackPanel>
                            <Border
                                x:Name="contentPanel"
                                Grid.Row="1"
                                Grid.Column="0"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                KeyboardNavigation.DirectionalNavigation="Contained"
                                KeyboardNavigation.TabIndex="2"
                                KeyboardNavigation.TabNavigation="Local">
                                <ContentPresenter
                                    x:Name="PART_SelectedContentHost"
                                    Margin="{TemplateBinding Padding}"
                                    ContentSource="SelectedContent"
                                    SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
                            </Border>
                        </Grid>

通过将加号按钮添加到选项卡面板，这将发生。如何解决这个问题。请提出您的建议。

Please refer the updated screenshot

Answer 1

我假设您指的是虚线。那不是正在显示的边框，我认为这是 Button 的默认 FocusVisualStyle。

尝试设置，

FocusVisualStyle = "{x:null}"

在按钮上。