見下圖，如何將下拉列表邊框與實(shí)際的組合框?qū)R？https://imgur.com/uNO45F2這是 Combobox 的代碼，它使用自定義的 ComboBoxItem 樣式，<ComboBox Grid.Row="0" Grid.Column="0" ItemsSource="{Binding ASDevicesView, Mode=OneWay , UpdateSourceTrigger=PropertyChanged}"  AutomationProperties.AutomationId="4314"                      SelectedItem="{Binding SDevice}" IsEditable="True" Text="{Binding SearchText}" MaxDropDownHeight="166" ItemContainerStyle="{StaticResource MyComboBoxItemStyle}">    <ComboBox.Style>        <Style TargetType="{x:Type ComboBox}">            <Style.Triggers>                <Trigger Property="IsKeyboardFocusWithin" Value="True">                    <Setter Property="IsDropDownOpen" Value="true" />                </Trigger>            </Style.Triggers>        </Style>    </ComboBox.Style></ComboBox>這是 ComboBoxItem 樣式的代碼，<Style x:Key="MyComboBoxItemStyle" BasedOn="{StaticResource {x:Type ComboBoxItem}}" TargetType="{x:Type ComboBoxItem}">    <Setter Property="HorizontalContentAlignment" Value="Center" />    <Setter Property="VerticalContentAlignment" Value="Center" />    <Setter Property="RenderOptions.ClearTypeHint" Value="Enabled" />    <Setter Property="Width" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=ActualWidth}" />    <Setter Property="Height" Value="40" />