WPF 菜单 - 不需要的边框 [英] WPF Menu - unwanted borders

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本文介绍了WPF 菜单 - 不需要的边框的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我制作了一个简单的 WPF 菜单并更改了它的背景和前景色，但是子菜单本身和每个分隔符周围仍然有一个边框，我无法删除:

I've made a simple WPF menu and changed its background and foreground colors, but there is still a border around the submenu itself and around each separator which I'm not able to remove:

Xaml 代码:

<Menu Style="{DynamicResource MainMenu}" IsMainMenu="true">
    <MenuItem Header="_File">
       <MenuItem Header="_New" Command="New"/>
          <Separator />
          <MenuItem Header="_Import"/>
          <MenuItem Header="_Export"/>
          <Separator />
          <MenuItem Header="_Print..." Command="Print"/>
          <MenuItem Header="_Print Setup..."/>
          <Separator />
          <MenuItem Header="_Sign Out" />
          <Separator />
          <MenuItem Header="_Exit"/>
       <MenuItem Header="_Edit"/>
       <MenuItem Header="_View"/>
       <MenuItem Header="_Tools"/>
       <MenuItem Header="_Help"/>
</Menu>

风格:

<Style TargetType="{x:Type Menu}" x:Key="MainMenu">
    <Setter Property="Background" Value="#2b2b2b"/>
    <Setter Property="Foreground" Value="White"/>
    <Setter Property="BorderBrush" Value="#3f3f46"/>
    <Style.Resources>
        <Style TargetType="{x:Type MenuItem}">
            <Setter Property="Background" Value="#3f3f46"/>
            <Setter Property="Foreground" Value="White"/>
            <Setter Property="BorderBrush" Value="#3f3f46"/>
        </Style>
        <Style TargetType="{x:Type Separator}">
            <Setter Property="Background" Value="White"/>
        </Style>
    </Style.Resources>
</Style>

推荐答案

白线是 Popup 模板的一部分，这是 MenuItem 在其默认模板中使用的.您必须覆盖它才能删除这些衬里.

The white lines are part of the Popup template, which is what MenuItem uses at its default template. You'll have to override it to remove these linings.

如果您有 Blend，那么您可以轻松更改模板并将代码复制粘贴到您的项目中.如果您没有 Blend，请试一试:

If you have Blend, then you can easily change the template and copy-paste the code into your project. If you don't have Blend, give this a shot:

1- 添加对 PresentationFramework.Aero

2- 在您的 XAML 文件中，导入此命名空间:

2- In your XAML file, import this namespace:

xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"

将此代码粘贴到 Window.Resources 部分中.这是 Blend 根据修改后的模板生成的:

Paste this code inside the Window.Resources section. This is what Blend generated based on the modified template:

 <LinearGradientBrush x:Key="MenuItemSelectionFill" EndPoint="0,1" StartPoint="0,0">
        <GradientStop Color="#34C5EBFF" Offset="0"/>
        <GradientStop Color="#3481D8FF" Offset="1"/>
    </LinearGradientBrush>
    <Geometry x:Key="Checkmark">M 0,5.1 L 1.7,5.2 L 3.4,7.1 L 8,0.4 L 9.2,0 L 3.3,10.8 Z</Geometry>
    <ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
        <Grid SnapsToDevicePixels="true">
            <Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" RadiusY="2" RadiusX="2" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
            <Rectangle x:Name="InnerBorder" Margin="1" RadiusY="2" RadiusX="2"/>
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition MinWidth="24" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
                    <ColumnDefinition Width="4"/>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="37"/>
                    <ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
                    <ColumnDefinition Width="17"/>
                </Grid.ColumnDefinitions>
                <ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="1" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
                <Border x:Name="GlyphPanel" BorderBrush="#CDD3E6" BorderThickness="1" Background="#E6EFF4" CornerRadius="3" Height="22" Margin="1" Visibility="Hidden" Width="22">
                    <Path x:Name="Glyph" Data="{StaticResource Checkmark}" Fill="#0C12A1" FlowDirection="LeftToRight" Height="11" Width="9"/>
                </Border>
                <ContentPresenter Grid.Column="2" ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                <TextBlock Grid.Column="4" Margin="{TemplateBinding Padding}" Text="{TemplateBinding InputGestureText}"/>
            </Grid>
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="Icon" Value="{x:Null}">
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="IsChecked" Value="true">
                <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="IsHighlighted" Value="true">
                <Setter Property="Fill" TargetName="Bg" Value="{StaticResource MenuItemSelectionFill}"/>
                <Setter Property="Stroke" TargetName="Bg" Value="#8071CBF1"/>
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#40FFFFFF"/>
            </Trigger>
            <Trigger Property="IsEnabled" Value="false">
                <Setter Property="Foreground" Value="#FF9A9A9A"/>
                <Setter Property="Background" TargetName="GlyphPanel" Value="#EEE9E9"/>
                <Setter Property="BorderBrush" TargetName="GlyphPanel" Value="#DBD6D6"/>
                <Setter Property="Fill" TargetName="Glyph" Value="#848589"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>
    <LinearGradientBrush x:Key="MenuItemPressedFill" EndPoint="0,1" StartPoint="0,0">
        <GradientStop Color="#28717070" Offset="0"/>
        <GradientStop Color="#50717070" Offset="0.75"/>
        <GradientStop Color="#90717070" Offset="1"/>
    </LinearGradientBrush>
    <Geometry x:Key="UpArrow">M 0,4 L 3.5,0 L 7,4 Z</Geometry>
    <Style x:Key="MenuScrollButton" BasedOn="{x:Null}" TargetType="{x:Type RepeatButton}">
        <Setter Property="ClickMode" Value="Hover"/>
        <Setter Property="MinWidth" Value="0"/>
        <Setter Property="MinHeight" Value="0"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <DockPanel Background="Transparent" SnapsToDevicePixels="true">
                        <Rectangle x:Name="R1" DockPanel.Dock="Right" Fill="Transparent" Width="1"/>
                        <Rectangle x:Name="B1" DockPanel.Dock="Bottom" Fill="Transparent" Height="1"/>
                        <Rectangle x:Name="L1" DockPanel.Dock="Left" Fill="Transparent" Width="1"/>
                        <Rectangle x:Name="T1" DockPanel.Dock="Top" Fill="Transparent" Height="1"/>
                        <ContentPresenter x:Name="ContentContainer" HorizontalAlignment="Center" Margin="2,2,2,2" VerticalAlignment="Center"/>
                    </DockPanel>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsPressed" Value="true">
                            <Setter Property="Fill" TargetName="R1" Value="{DynamicResource {x:Static SystemColors.ControlLightLightBrushKey}}"/>
                            <Setter Property="Fill" TargetName="B1" Value="{DynamicResource {x:Static SystemColors.ControlLightLightBrushKey}}"/>
                            <Setter Property="Fill" TargetName="L1" Value="{DynamicResource {x:Static SystemColors.ControlDarkDarkBrushKey}}"/>
                            <Setter Property="Fill" TargetName="T1" Value="{DynamicResource {x:Static SystemColors.ControlDarkDarkBrushKey}}"/>
                            <Setter Property="Margin" TargetName="ContentContainer" Value="3,3,1,1"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <MenuScrollingVisibilityConverter x:Key="MenuScrollingVisibilityConverter"/>
    <Geometry x:Key="DownArrow">M 0,0 L 3.5,4 L 7,0 Z</Geometry>
    <Style x:Key="{ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}" BasedOn="{x:Null}" TargetType="{x:Type ScrollViewer}">
        <Setter Property="HorizontalScrollBarVisibility" Value="Hidden"/>
        <Setter Property="VerticalScrollBarVisibility" Value="Auto"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollViewer}">
                    <Grid SnapsToDevicePixels="true">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="*"/>
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="*"/>
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>
                        <Border Grid.Column="0" Grid.Row="1">
                            <ScrollContentPresenter Margin="{TemplateBinding Padding}"/>
                        </Border>
                        <RepeatButton Grid.Column="0" CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Command="{x:Static ScrollBar.LineUpCommand}" Focusable="false" Grid.Row="0" Style="{StaticResource MenuScrollButton}">
                            <RepeatButton.Visibility>
                                <MultiBinding ConverterParameter="0" Converter="{StaticResource MenuScrollingVisibilityConverter}" FallbackValue="Visibility.Collapsed">
                                    <Binding Path="ComputedVerticalScrollBarVisibility" RelativeSource="{RelativeSource TemplatedParent}"/>
                                    <Binding Path="VerticalOffset" RelativeSource="{RelativeSource TemplatedParent}"/>
                                    <Binding Path="ExtentHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                                    <Binding Path="ViewportHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                                </MultiBinding>
                            </RepeatButton.Visibility>
                            <Path Data="{StaticResource UpArrow}" Fill="{DynamicResource {x:Static SystemColors.MenuTextBrushKey}}"/>
                        </RepeatButton>
                        <RepeatButton Grid.Column="0" CommandTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Command="{x:Static ScrollBar.LineDownCommand}" Focusable="false" Grid.Row="2" Style="{StaticResource MenuScrollButton}">
                            <RepeatButton.Visibility>
                                <MultiBinding ConverterParameter="100" Converter="{StaticResource MenuScrollingVisibilityConverter}" FallbackValue="Visibility.Collapsed">
                                    <Binding Path="ComputedVerticalScrollBarVisibility" RelativeSource="{RelativeSource TemplatedParent}"/>
                                    <Binding Path="VerticalOffset" RelativeSource="{RelativeSource TemplatedParent}"/>
                                    <Binding Path="ExtentHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                                    <Binding Path="ViewportHeight" RelativeSource="{RelativeSource TemplatedParent}"/>
                                </MultiBinding>
                            </RepeatButton.Visibility>
                            <Path Data="{StaticResource DownArrow}" Fill="{DynamicResource {x:Static SystemColors.MenuTextBrushKey}}"/>
                        </RepeatButton>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuContent, TypeInTargetAssembly={x:Type FrameworkElement}}" TargetType="{x:Type ContentControl}">
        <Border BorderBrush="#FF959595" BorderThickness="1" Background="#3f3f46">
            <Grid>
                <ContentPresenter Grid.ColumnSpan="2" Margin="1,0"/>
            </Grid>
        </Border>
    </ControlTemplate>
    <ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
        <Grid SnapsToDevicePixels="true">
            <Rectangle x:Name="OuterBorder" RadiusY="2" RadiusX="2"/>
            <Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" Margin="1" RadiusY="1" RadiusX="1" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
            <Rectangle x:Name="InnerBorder" Margin="2"/>
            <DockPanel>
                <ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="4,0,6,0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
                <Path x:Name="GlyphPanel" Data="{StaticResource Checkmark}" Fill="{TemplateBinding Foreground}" FlowDirection="LeftToRight" Margin="7,0,0,0" Visibility="Collapsed" VerticalAlignment="Center"/>
                <ContentPresenter ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
            </DockPanel>
            <Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="1" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Bottom" VerticalOffset="-1">
                <Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent">
                    <ContentControl x:Name="SubMenuBorder" IsTabStop="false" Template="{DynamicResource {ComponentResourceKey ResourceId=SubmenuContent, TypeInTargetAssembly={x:Type FrameworkElement}}}">
                        <ScrollViewer CanContentScroll="true" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Cycle" Grid.IsSharedSizeScope="true" Margin="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle"/>
                        </ScrollViewer>
                    </ContentControl>
                </Themes:SystemDropShadowChrome>
            </Popup>
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="IsSuspendingPopupAnimation" Value="true">
                <Setter Property="PopupAnimation" TargetName="PART_Popup" Value="None"/>
            </Trigger>
            <Trigger Property="Icon" Value="{x:Null}">
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="IsChecked" Value="true">
                <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="HasDropShadow" SourceName="PART_Popup" Value="true">
                <Setter Property="Margin" TargetName="Shdw" Value="0,0,5,5"/>
                <Setter Property="Color" TargetName="Shdw" Value="#71000000"/>
            </Trigger>
            <Trigger Property="IsHighlighted" Value="true">
                <Setter Property="Stroke" TargetName="Bg" Value="#90717070"/>
                <Setter Property="Stroke" TargetName="OuterBorder" Value="#50FFFFFF"/>
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#50FFFFFF"/>
            </Trigger>
            <Trigger Property="IsKeyboardFocused" Value="true">
                <Setter Property="Stroke" TargetName="Bg" Value="#E0717070"/>
                <Setter Property="Fill" TargetName="Bg" Value="{StaticResource MenuItemPressedFill}"/>
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#50747272"/>
            </Trigger>
            <Trigger Property="IsSubmenuOpen" Value="true">
                <Setter Property="Stroke" TargetName="Bg" Value="#E0717070"/>
                <Setter Property="Fill" TargetName="Bg" Value="{StaticResource MenuItemPressedFill}"/>
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#50747272"/>
            </Trigger>
            <Trigger Property="IsEnabled" Value="false">
                <Setter Property="Foreground" Value="#FF9A9A9A"/>
                <Setter Property="Fill" TargetName="GlyphPanel" Value="#848589"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>
    <ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
        <Grid SnapsToDevicePixels="true">
            <Rectangle x:Name="OuterBorder" RadiusY="2" RadiusX="2"/>
            <Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" Margin="1" RadiusY="1" RadiusX="1" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
            <Rectangle x:Name="InnerBorder" Margin="2"/>
            <DockPanel>
                <ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="4,0,6,0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
                <Path x:Name="GlyphPanel" Data="{StaticResource Checkmark}" Fill="{TemplateBinding Foreground}" FlowDirection="LeftToRight" Margin="7,0,0,0" Visibility="Collapsed" VerticalAlignment="Center"/>
                <ContentPresenter ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
            </DockPanel>
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="Icon" Value="{x:Null}">
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="IsChecked" Value="true">
                <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="IsHighlighted" Value="true">
                <Setter Property="Stroke" TargetName="Bg" Value="#90717070"/>
                <Setter Property="Stroke" TargetName="OuterBorder" Value="#50FFFFFF"/>
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#50FFFFFF"/>
            </Trigger>
            <Trigger Property="IsKeyboardFocused" Value="true">
                <Setter Property="Stroke" TargetName="Bg" Value="#E0717070"/>
                <Setter Property="Fill" TargetName="Bg" Value="{StaticResource MenuItemPressedFill}"/>
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#50747272"/>
            </Trigger>
            <Trigger Property="IsEnabled" Value="false">
                <Setter Property="Foreground" Value="#FF9A9A9A"/>
                <Setter Property="Fill" TargetName="GlyphPanel" Value="#848589"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>
    <Geometry x:Key="RightArrow">M 0,0 L 4,3.5 L 0,7 Z</Geometry>
    <ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
        <Grid SnapsToDevicePixels="true">
            <Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" RadiusY="2" RadiusX="2" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
            <Rectangle x:Name="InnerBorder" Margin="1" RadiusY="2" RadiusX="2" Stroke="Transparent" StrokeThickness="1"/>
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition MinWidth="24" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
                    <ColumnDefinition Width="4"/>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="37"/>
                    <ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
                    <ColumnDefinition Width="17"/>
                </Grid.ColumnDefinitions>
                <ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="1" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
                <Border x:Name="GlyphPanel" BorderBrush="#CDD3E6" BorderThickness="1" Background="#E6EFF4" CornerRadius="3" Height="22" Margin="1" Visibility="Hidden" Width="22">
                    <Path x:Name="Glyph" Data="{StaticResource Checkmark}" Fill="#0C12A1" FlowDirection="LeftToRight" Height="11" Width="9"/>
                </Border>
                <ContentPresenter Grid.Column="2" ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                <TextBlock Grid.Column="4" Margin="{TemplateBinding Padding}" Text="{TemplateBinding InputGestureText}" Visibility="Collapsed"/>
                <Path Grid.Column="5" Data="{StaticResource RightArrow}" Fill="{TemplateBinding Foreground}" Margin="4,0,0,0" VerticalAlignment="Center"/>
            </Grid>
            <Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="-2" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Right" VerticalOffset="-3">
                <Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent">
                    <ContentControl x:Name="SubMenuBorder" IsTabStop="false" Template="{DynamicResource {ComponentResourceKey ResourceId=SubmenuContent, TypeInTargetAssembly={x:Type FrameworkElement}}}">
                        <ScrollViewer CanContentScroll="true" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Cycle" Grid.IsSharedSizeScope="true" Margin="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle"/>
                        </ScrollViewer>
                    </ContentControl>
                </Themes:SystemDropShadowChrome>
            </Popup>
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="IsSuspendingPopupAnimation" Value="true">
                <Setter Property="PopupAnimation" TargetName="PART_Popup" Value="None"/>
            </Trigger>
            <Trigger Property="IsHighlighted" Value="true">
                <Setter Property="Stroke" TargetName="InnerBorder" Value="#D1DBF4FF"/>
            </Trigger>
            <Trigger Property="Icon" Value="{x:Null}">
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="IsChecked" Value="true">
                <Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
                <Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
            </Trigger>
            <Trigger Property="HasDropShadow" SourceName="PART_Popup" Value="true">
                <Setter Property="Margin" TargetName="Shdw" Value="0,0,5,5"/>
                <Setter Property="Color" TargetName="Shdw" Value="#71000000"/>
            </Trigger>
            <Trigger Property="IsHighlighted" Value="true">
                <Setter Property="Fill" TargetName="Bg" Value="{StaticResource MenuItemSelectionFill}"/>
                <Setter Property="Stroke" TargetName="Bg" Value="#8571CBF1"/>
            </Trigger>
            <Trigger Property="IsEnabled" Value="false">
                <Setter Property="Foreground" Value="#FF9A9A9A"/>
                <Setter Property="Background" TargetName="GlyphPanel" Value="#EEE9E9"/>
                <Setter Property="BorderBrush" TargetName="GlyphPanel" Value="#DBD6D6"/>
                <Setter Property="Fill" TargetName="Glyph" Value="#848589"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>
    <Style x:Key="MenuItemStyle1" TargetType="{x:Type MenuItem}">
        <Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
        <Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
        <Style.Triggers>
            <Trigger Property="Role" Value="TopLevelHeader">
                <Setter Property="Padding" Value="7,2,8,3"/>
                <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
            </Trigger>
            <Trigger Property="Role" Value="TopLevelItem">
                <Setter Property="Padding" Value="7,2,8,3"/>
                <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
            </Trigger>
            <Trigger Property="Role" Value="SubmenuHeader">
                <Setter Property="Padding" Value="2,3,2,3"/>
                <Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
            </Trigger>
            <Trigger Property="Role" Value="SubmenuItem">
                <Setter Property="Padding" Value="2,3,2,3"/>
            </Trigger>
        </Style.Triggers>
    </Style>

让您的 Menu 仍然使用您的 MainMenu 样式，但让每个子 MenuItem 使用 Blend 生成的样式.例如，尝试

Let your Menu still use your MainMenu style, but have each sub MenuItem use the style Blend generated. For example, try

<MenuItem Header="_File" Style="{DynamicResource MenuItemStyle1}">

它看起来像这样:

不确定这与您要寻找的东西有多接近，但希望能让您走上正轨.

Not sure how close this is to what you're looking for but should hopefully put you on the right track.

这篇关于WPF 菜单 - 不需要的边框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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