将突出显示的文本框更改为透明边框C# WPF

<Style x:Key="TransparentTextBox" TargetType="TextBox">
    <Setter Property="BorderThickness" Value="0" />
    <Setter Property="Background" Value="Transparent" />
    <<Setter Property="Foreground" Value="Black" />
    <Setter Property="Padding" Value="5" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TextBox">
                <Border Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}">
                    <ScrollViewer x:Name="PART_ContentHost" />
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<TextBox Style="{StaticResource TransparentTextBox}" Text="Hello, World!" />