如何使元素原地旋转 - WPF .NET Framework | Microsoft Learn

<Button
  RenderTransformOrigin="0.5,0.5"
  HorizontalAlignment="Left">
    Hello,World
  <Button.RenderTransform>
    <RotateTransform x:Name="MyAnimatedTransform" Angle="0" />
  </Button.RenderTransform>
  <Button.Triggers>
    <EventTrigger RoutedEvent="Button.Click">
      <BeginStoryboard>
        <Storyboard>
          <DoubleAnimation
            Storyboard.TargetName="MyAnimatedTransform"
            Storyboard.TargetProperty="(RotateTransform.Angle)"
            From="0.0" To="360" Duration="0:0:1" />
        </Storyboard>
      </BeginStoryboard>
    </EventTrigger>
  </Button.Triggers>
</Button>