求问连续执行几个命令，但是每两个命令之间设置一定的时间间隔怎么实现

[yjw629]

Storyboard instructionsSequence = new Storyboard();
DoubleAnimationUsingKeyFrames animation;

for (int i = 0; i < this.instructionSequence.Length; i++)
{
this.instructionSequence[i].ApplyAnimationClock(FrameworkElement.OpacityProperty, null);

animation = new DoubleAnimationUsingKeyFrames();
animation.FillBehavior = FillBehavior.Stop;
animation.BeginTime = TimeSpan.FromMilliseconds(i * 700);
Storyboard.SetTarget(animation, this.instructionSequence[i]);

Storyboard.SetTargetProperty(animation, new PropertyPath("Opacity"));
instructionsSequence.Children.Add(animation);


animation.KeyFrames.Add(new EasingDoubleKeyFrame(0.3, KeyTime.FromTimeSpan(TimeSpan.Zero)));
animation.KeyFrames.Add(new EasingDoubleKeyFrame(1, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(500))));
animation.KeyFrames.Add(new EasingDoubleKeyFrame(1, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(1000))));

}

this.instructionSequence[i]是XAML里画的一些矩形，上面代码可实现这些矩形按指定顺序透明度改变，我现在还想加声音，就是每个矩形透明度改变时，会有相应的声音，现在已能用键盘映射控制一款音乐软件了，每个键能发出一个音，比如q是do，w是re，键盘映射用PressKey('q', true);这个命令触发，上面的代码是复制来的，我只是大致知道他是干嘛的，对storyboard这些还不是很理解，不知道有没有办法做到加声音进去?

[bdmh]

设置间歇可以用Thread.Sleep

[stonespace]

播放声音可以用SoundPlayer类，还可以用mci命令，延时可以用Thread.Sleep，