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How to: Make an Element Spin in Place

  • Artikkeli

This example shows how to make an element spin by using a RotateTransform and a DoubleAnimation.

The following example applies the RotateTransform to the RenderTransform property of the element. The example uses a DoubleAnimation to animate the Angle of the RotateTransform. To make the element spin in place, the example sets the RenderTransformOrigin property of the element to the point (0.5, 0.5).

Example

<!-- RotateAboutCenterExample.xaml
     This example shows how to make an element spin
     about its center. -->
<Page 
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="Microsoft.Samples.Animation.RotateAboutCenterExample" 
  WindowTitle="Rotate About Center Example">    
  <StackPanel Margin="50">
    
    <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> 
  </StackPanel> 
</Page>

For the complete sample, which includes more transformation examples, see 2D Transforms Sample.

See also