C# 产生用户控制脉冲

我想做的是让我的控制“脉冲”（比如放大一点，然后缩小一点，然后恢复到正常大小）。下面的代码正是我想要的，但似乎应该有一种更简单的方法。它必须在代码隐藏中完成，因为这是一个抽象类，我们的大多数控件都是从这个抽象类派生的。我对动画控件和故事板没有太多经验

因此，我的问题是，有没有比下面的方法更简单的方法来获得所需的结果（同时仍然在代码隐藏中完成）

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这是一种很好的方法，WPF不提供自动脉冲的方法或事件。您的方法很简单，在创建它时，您知道如何根据自己的意愿修改它。

您可以通过将增长/收缩逻辑移动到自己的方法中来简化一些事情。这减少了重复，并提供了潜在的更可重用的代码kibble

public void Pulse()
{
    var storyboard = new Storyboard
    {
        FillBehavior = FillBehavior.Stop,
        RepeatBehavior = new RepeatBehavior(2)
    };

    double timeIncrement = .15;

    double growPercent = 20;
    double shrinkPercent = -20;

    var firstTime = TimeSpan.FromSeconds(timeIncrement);
    var secondTime = TimeSpan.FromSeconds(timeIncrement * 3);
    var thirdTime = TimeSpan.FromSeconds(timeIncrement * 4);

    var scale = new ScaleTransform(1.0, 1.0);

    RenderTransformOrigin = new Point(.5, .5);
    RenderTransform = scale;

    storyboard = AddSizeChange(firstTime, growPercent, storyboard);
    storyboard = AddSizeChange(secondTime, shrinkPercent, storyboard);
    storyboard = AddSizeChange(thirdTime, growPercent, storyboard);

    BeginStoryboard(storyboard, HandoffBehavior.SnapshotAndReplace, false);
}

public Storyboard AddSizeChange(TimeSpan animTime, double changePercent, Storyboard storyboard)
{
    DoubleAnimation growX = new DoubleAnimation
    {
        Duration = animTime,
        To = 1 + changePercent
    };
    storyboard.Children.Add(growX);
    Storyboard.SetTargetProperty(growX, new PropertyPath("RenderTransform.ScaleX"));

    DoubleAnimation growY = new DoubleAnimation
    {
        Duration = animTime,
        To = 1 + changePercent
    };
    storyboard.Children.Add(growY);
    Storyboard.SetTargetProperty(growY, new PropertyPath("RenderTransform.ScaleY"));

    return storyboard;
}

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我觉得很简单…好的，谢谢。我认为一定有动画的地方，我错过了，这将使这更简单。

public void Pulse()
{
    var storyboard = new Storyboard
    {
        FillBehavior = FillBehavior.Stop,
        RepeatBehavior = new RepeatBehavior(2)
    };

    double timeIncrement = .15;

    double growPercent = 20;
    double shrinkPercent = -20;

    var firstTime = TimeSpan.FromSeconds(timeIncrement);
    var secondTime = TimeSpan.FromSeconds(timeIncrement * 3);
    var thirdTime = TimeSpan.FromSeconds(timeIncrement * 4);

    var scale = new ScaleTransform(1.0, 1.0);

    RenderTransformOrigin = new Point(.5, .5);
    RenderTransform = scale;

    storyboard = AddSizeChange(firstTime, growPercent, storyboard);
    storyboard = AddSizeChange(secondTime, shrinkPercent, storyboard);
    storyboard = AddSizeChange(thirdTime, growPercent, storyboard);

    BeginStoryboard(storyboard, HandoffBehavior.SnapshotAndReplace, false);
}

public Storyboard AddSizeChange(TimeSpan animTime, double changePercent, Storyboard storyboard)
{
    DoubleAnimation growX = new DoubleAnimation
    {
        Duration = animTime,
        To = 1 + changePercent
    };
    storyboard.Children.Add(growX);
    Storyboard.SetTargetProperty(growX, new PropertyPath("RenderTransform.ScaleX"));

    DoubleAnimation growY = new DoubleAnimation
    {
        Duration = animTime,
        To = 1 + changePercent
    };
    storyboard.Children.Add(growY);
    Storyboard.SetTargetProperty(growY, new PropertyPath("RenderTransform.ScaleY"));

    return storyboard;
}