如何用c#写PlaneProjection.RotationY的动画呢

C# code

DoubleAnimation da = new DoubleAnimation()                {                    Duration = TimeSpan.FromSeconds(0.5),                    To = 50                };                Storyboard sb = new Storyboard();                Storyboard.SetTarget(da, this.myCavas);                Storyboard.SetTargetProperty(da, new PropertyPath("(UIElement.Projection).(PlaneProjection.RotationY)"));//如果里边换成Height,Width都是可以的。                sb.Children.Add(da);                sb.Begin();

测试了，这样不行呀。如果做高度，或者是宽度的动画，都是可以的。

错误提示：无法解析指定对象的 TargetProperty (UIElement.Projection).(PlaneProjection.RotationY)。

我用谷歌搜索了下，找到一堆代码也是不行。

C# code

Storyboard storyTest = new Storyboard();                DoubleAnimationUsingKeyFrames _new_rotate = new DoubleAnimationUsingKeyFrames();                EasingDoubleKeyFrame _frame1 = new EasingDoubleKeyFrame();                _frame1.Value = 180;                _frame1.KeyTime = new TimeSpan(0, 0, 0, 1);                EasingDoubleKeyFrame _frame2 = new EasingDoubleKeyFrame();                _frame2.Value = 0;                _frame2.KeyTime = new TimeSpan(0, 0, 0, 2);                EasingDoubleKeyFrame _frame3 = new EasingDoubleKeyFrame();                _frame3.Value = 90;                _frame3.KeyTime = new TimeSpan(0, 0, 0, 5);                _new_rotate.KeyFrames.Add(_frame1);                _new_rotate.KeyFrames.Add(_frame2);                _new_rotate.KeyFrames.Add(_frame3);                storyTest.Children.Add(_new_rotate);                Storyboard.SetTarget(_new_rotate, this.myCavas);                Storyboard.SetTargetProperty(_new_rotate, new PropertyPath("(UIElement.Projection).(PlaneProjection.RotationY)"));                storyTest.AutoReverse = false;                //storyTest.FillBehavior = FillBehavior.Stop;//加入这一行后，不管AutoReverse设置为何值，都会回复原状                            storyTest.Begin();

[解决办法]
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silverlight3.0测试通过

C# code

         Canvas c;     void btnDraw_Click(object sender, RoutedEventArgs e)        {            Storyboard story = new Storyboard();            DoubleAnimation yAnimation = new DoubleAnimation();            yAnimation.From = 0.5;            yAnimation.To = 100;            yAnimation.Duration = new Duration(TimeSpan.FromSeconds(5));            PlaneProjection pp = (PlaneProjection)c.Projection; //找到你注册的属性              Storyboard.SetTarget(yAnimation, pp);            Storyboard.SetTargetProperty(yAnimation, new PropertyPath(PlaneProjection.RotationYProperty));            story.Children.Add(yAnimation); story.Begin();         }        void MainPage_Loaded(object sender, RoutedEventArgs e)        {            c = new Canvas();            c.Height = 200;            c.Width = 200;            c.Background = new SolidColorBrush(Color.FromArgb(255, 0, 0, 0));            PlaneProjection pp = new PlaneProjection() { RotationY = 0 };//这里已经指定了RotationY            c.Projection = pp;            LayoutRoot.Children.Add(c);        }