WPF 使用触发器让窗口无法最大化且同时可以调整窗口大小

  <Window.Style>
        <Style TargetType="{x:Type Window}">
            <Setter Property="WindowState"  Value="{Binding Tag, RelativeSource={RelativeSource Mode=Self}, UpdateSourceTrigger=PropertyChanged,Delay=100}"/>
            <Style.Triggers>
                <Trigger Property="WindowState" Value="Maximized">
                    <Trigger.EnterActions>
                        <BeginStoryboard x:Name="bs">
                            <Storyboard Storyboard.TargetProperty="Tag"    Duration="0:0:0" >
                                <ObjectAnimationUsingKeyFrames>
                                    <DiscreteObjectKeyFrame KeyTime="0:0:0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <WindowState>normal</WindowState>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </Trigger.EnterActions>
                    <Trigger.ExitActions>
                        <RemoveStoryboard BeginStoryboardName="bs"/>
                    </Trigger.ExitActions>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Window.Style>