在 WPF 中使用 DoubleAnimationUsingKeyFrames 为滑块设置动画

Question

我尝试做的事情应该相当简单，但无论出于何种原因，它都行不通。 预期的行为应该是滑块拇指从0 => 100 (silder min=0 max=100) 移动，这意味着从左到右，然后再返回，再到右边并在那里等待 5 秒，就像 KITT （骑士骑士）。

到目前为止，我唯一实现的就是它开始向右移动，就这样，停在那里，不做任何事情，没有进一步的动画：

storyboard = new Storyboard();
storyboard.Completed += Storyboard_OnCompleted;

var doubleKeyFrame = new DoubleAnimationUsingKeyFrames();
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(0, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0))));                       
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(100, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 5))));
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(0, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 5))));
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(100, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 3))));
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(100, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 5))));

Storyboard.SetTarget(doubleKeyFrame, slider);
Storyboard.SetTargetProperty(doubleKeyFrame, new PropertyPath("Value"));
storyboard.Children.Add(doubleKeyFrame);

storyboard.Begin(slider);

我从几个小时开始就在玩这个，我不知道。请也许有人可以帮我一下。

国王的问候，伯恩哈德。

Answer 1

试试这个，我添加了RepeatBehavior.Forever 和doubleKeyFrame 的持续时间：

var storyboard = new Storyboard();

var doubleKeyFrame = new DoubleAnimationUsingKeyFrames();
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(100, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0))));
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(0, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 5))));

doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(0, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0))));
doubleKeyFrame.KeyFrames.Add(new LinearDoubleKeyFrame(100, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 3))));

doubleKeyFrame.RepeatBehavior = RepeatBehavior.Forever;
doubleKeyFrame.Duration = TimeSpan.FromSeconds(10);

Storyboard.SetTarget(doubleKeyFrame, slider);
Storyboard.SetTargetProperty(doubleKeyFrame, new PropertyPath("Value"));
storyboard.Children.Add(doubleKeyFrame);

storyboard.Begin(slider);