AllowsTransparency="True" 怎么放大缩小窗体

后台都不用写任何代码！

xaml:

<Window x:Class="TestNoBorderWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        Title="TestNoBorderWindow"
        Width="300"
        Height="300"
        MinWidth="100"
        MinHeight="100"
        mc:Ignorable="d">
    <Window.Style>
        <Style TargetType="Window">
            <Setter Property="Background" Value="Transparent" />
            <Setter Property="WindowStyle" Value="None" />
            <Setter Property="ResizeMode" Value="CanResize" />
            <Setter Property="AllowsTransparency" Value="True" />
            <Setter Property="WindowChrome.WindowChrome">
                <Setter.Value>
                    <WindowChrome CaptionHeight="30" ResizeBorderThickness="20" />
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Style>
    <Border Margin="10"
            Background="White"
            BorderBrush="Red"
            BorderThickness="1"
            CornerRadius="5"
            SnapsToDevicePixels="True">
        <Border.Effect>
            <DropShadowEffect BlurRadius="10"
                              Direction="0"
                              ShadowDepth="0" />
        </Border.Effect>
        <Grid />
    </Border>
</Window>