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感谢一位同事,我得到了解决方案。我只需要在 ContextMenu 上设置 ItemContainerStyle。

<UserControl.Resources>
    <Style x:Key="NoMouseOverStyle" TargetType="toolkit:MenuItem">
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="BorderBrush" Value="Transparent"/>
        <Setter Property="Padding" Value="4,3,2,3"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="toolkit:MenuItem">
                    <Grid>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="Disabled">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="0.5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Presenter"/>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Unfocused"/>
                                <!-- VisualState x:Name="Focused">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Bg"/>
                                        <ColorAnimation Duration="0" To="#40FFFFFF" Storyboard.TargetProperty="(Shape.Stroke).(SolidColorBrush.Color)" Storyboard.TargetName="InnerBorder"/>
                                    </Storyboard>
                                </VisualState -->
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <Rectangle Fill="{TemplateBinding Background}" RadiusY="2" RadiusX="2" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
                        <Rectangle x:Name="Bg" Opacity="0" RadiusY="2" RadiusX="2" Stroke="#8071CBF1" StrokeThickness="1">
                            <Rectangle.Fill>
                                <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                                    <GradientStop Color="#34C5EBFF" Offset="0"/>
                                    <GradientStop Color="#3481D8FF" Offset="1"/>
                                </LinearGradientBrush>
                            </Rectangle.Fill>
                        </Rectangle>
                        <Rectangle x:Name="InnerBorder" Margin="1" RadiusY="2" RadiusX="2" Stroke="Transparent"/>
                        <Grid>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition MinWidth="24" Width="Auto"/>
                                <ColumnDefinition Width="4"/>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="17"/>
                            </Grid.ColumnDefinitions>
                            <ContentPresenter Content="{TemplateBinding Icon}" Margin="1" VerticalAlignment="Center"/>
                            <ContentPresenter x:Name="Presenter" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.Column="2" Margin="{TemplateBinding Padding}"/>
                        </Grid>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</UserControl.Resources>

接着

<toolkit:ContextMenu Height="100" Background="Transparent" HorizontalOffset="-100" VerticalOffset="-100" Margin="98,112,0,0" Name="contextMenu1" VerticalAlignment="Top" Width="200" ItemContainerStyle="{StaticResource NoMouseOverStyle}">
于 2010-08-13T09:38:04.737 回答