这里有一种可能性。可以为绑定到RotationY特性的数据的代理值设置动画,而不是直接设置RotationY特性的动画。下面是一个可以使用的示例类:
public class ValueProxy : FrameworkElement
{
public static readonly DependencyProperty ValueProperty =
DependencyProperty.Register("Value", typeof(object), typeof(ValueProxy), new PropertyMetadata(OnPropertyChanged));
public object Value
{
get { return GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
private static void OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ValueProxy obj = (ValueProxy)d;
if (obj.PropertyChanged != null)
{
obj.PropertyChanged(obj, null);
}
}
public event EventHandler PropertyChanged;
}
<Grid x:Name="LayoutRoot" >
<Grid.Resources>
<Storyboard x:Name="sb1">
<DoubleAnimation Storyboard.TargetName="valueProxy" Storyboard.TargetProperty="Value" From="0" To="180" FillBehavior="Stop" />
</Storyboard>
<c:ValueProxy x:Name="valueProxy" Value="{Binding RotationY, ElementName=pp, Mode=TwoWay}" PropertyChanged="ValueProxy_PropertyChanged" />
</Grid.Resources>
<Button Content="Play Animation" Width="200" Height="200" Click="Button_Click" >
<Button.Projection>
<PlaneProjection x:Name="pp" RotationY="0" />
</Button.Projection>
</Button>
</Grid>