如何在C＃代码中设置dropshadoweffect的不透明度？

Question

我如何去动画代码中的阴影效果的不透明度。我在我的UI中动态地创建了包含图像和文本块的堆叠面板。我已经对图像应用了阴影效果，我希望使不透明度成为动画效果。下面是我有：

Image img = ch.ChannelLogo; //Create the image for the button 
img.Height = channelStackPnl.Height * .66; 

DropShadowEffect dSE = new DropShadowEffect(); 
dSE.Color = Colors.White; 
dSE.Direction = 25; 
dSE.ShadowDepth = 10; 
dSE.Opacity = .40; 
img.Effect = dSE; 

DoubleAnimation animateOpacity = new DoubleAnimation(); 
animateOpacity.From = 0; 
animateOpacity.To = 1; 
animateOpacity.AutoReverse = true; 
animateOpacity.RepeatBehavior = RepeatBehavior.Forever; 
animateOpacity.Duration = new Duration(new TimeSpan(0, 0, 0, 0, 400)); 

//Here's where I am stuck. How do I specifically target the opacity of the effect propery? 
img.BeginAnimationimg.BeginAnimation(DropShadowEffect.OpacityProperty,animateOpacity); 

Answer 1

dSE.BeginAnimation(DropShadowEffect.OpacityProperty, animateOpacity); 

大概...

（您设置动画效果，而不是图像）