在WPF中优雅地覆盖ComboBox的ToggleButton样式

   <Style x:Key="CustomComboBoxToggleButton" TargetType="{x:Type ToggleButton}">
       <Setter Property="Template">
           <Setter.Value>
               <ControlTemplate TargetType="{x:Type ToggleButton}">
                   <Border x:Name="Border" CornerRadius="3" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
                       <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="True" />
                    </Border>
                   <ControlTemplate.Triggers>
                       <Trigger Property="IsMouseOver" Value="True">
                           <Setter Property="Background" TargetName="Border" Value="LightBlue"/>
                        </Trigger>
                       <Trigger Property="IsPressed" Value="True">
                           <Setter Property="Background" TargetName="Border" Value="Blue"/>
                        </Trigger>
                       <Trigger Property="IsEnabled" Value="False">
                           <Setter Property="Opacity" TargetName="Border" Value="0.5"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources><ComboBox>
   <ComboBox.Resources>
       <Style TargetType="{x:Type ToggleButton}" BasedOn="{StaticResource CustomComboBoxToggleButton}"/>
    </ComboBox.Resources>
   <ComboBoxItem>Item 1</ComboBoxItem>
   <ComboBoxItem>Item 2</ComboBoxItem>
   <ComboBoxItem>Item 3</ComboBoxItem>
</ComboBox>