1    public class BlinkAnimation : Animatable 2     { 3         /// 
 4         /// 单例，保持所有闪烁的动画同步 5         /// 
 6         public static readonly BlinkAnimation Instance = new BlinkAnimation(); 7  8         public double BlinkOpacity 9         {10             get { return (double)GetValue(BlinkOpacityProperty); }11             set { SetValue(BlinkOpacityProperty, value); }12         }13 14         // Using a DependencyProperty as the backing store for BlinkOpacity.  This enables animation, styling, binding, etc...15         public static readonly DependencyProperty BlinkOpacityProperty =16             DependencyProperty.Register("BlinkOpacity", typeof(double), typeof(BlinkAnimation), new PropertyMetadata(0.0));17 18 19 20         /// 
21         /// 闪烁动画，用于动画同步22         /// 
23         public BlinkAnimation()24         {25             try26             {27                 DoubleAnimationUsingKeyFrames doubleAnimation = new DoubleAnimationUsingKeyFrames28                 {29                     RepeatBehavior = RepeatBehavior.Forever,30                     Duration = TimeSpan.FromSeconds(1.5)31                 };32 33                 DiscreteDoubleKeyFrame ddkf1 = new DiscreteDoubleKeyFrame(0.0, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(0)));34                 DiscreteDoubleKeyFrame ddkf2 = new DiscreteDoubleKeyFrame(1.0, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(0.75)));35 36                 doubleAnimation.KeyFrames.Add(ddkf1);37                 doubleAnimation.KeyFrames.Add(ddkf2);38 39                 if (BlinkOpacityProperty!=null)40                 {41                      BeginAnimation(BlinkOpacityProperty, doubleAnimation);42                 } 43             }44             catch (Exception)45             {46                 // ignored47             }48         }49 50         protected override Freezable CreateInstanceCore()51         {52             return Instance;53         }54     }

 

 

使用方法：

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