WPF Storyboard 无法随高度调整窗口宽度

Question

我正在尝试使用Storyboard 调整 WPF 窗口的大小。当我为窗口宽度或高度设置动画时，我的代码可以完美运行，但是当我在它们两个上应用情节提要时，它只会为第一个属性（在我的情况下为宽度）设置动画并跳过第二个。

我的代码是：

    private void AnimateWindowSize(double width, double height, bool isRelative = false)
    {
        //---------------------------------------------------
        //  Settings
        //---------------------------------------------------

        var duration = TimeSpan.FromSeconds(0.2);
        var newWidth = isRelative ? this.Width - width : width;
        var newHeight = isRelative ? this.Height - height : height;

        Console.WriteLine($"Animating window from {this.Width}x{this.Height} to {newWidth}x{newHeight}");

        this.Dispatcher.BeginInvoke(new Action(() =>
        {
            var storyboard = new Storyboard();

            //---------------------------------------------------
            //  Animate Width
            //---------------------------------------------------
            var widthAnimation = new DoubleAnimation()
            {
                Duration = new Duration(duration),
                From = this.ActualWidth,
                To = newWidth
            };

            Storyboard.SetTarget(widthAnimation, this);
            Storyboard.SetTargetProperty(widthAnimation, new PropertyPath(Window.WidthProperty));
            storyboard.Children.Add(widthAnimation);

            //---------------------------------------------------
            //  Animate Width
            //---------------------------------------------------
            var heightAnimation = new DoubleAnimation()
            {
                Duration = new Duration(duration),
                From = this.ActualHeight,
                To = newHeight
            };

            Storyboard.SetTarget(heightAnimation, this);
            Storyboard.SetTargetProperty(heightAnimation, new PropertyPath(Window.HeightProperty));
            storyboard.Children.Add(heightAnimation);

            //---------------------------------------------------
            //  Play
            //---------------------------------------------------
            //storyboard.Begin();
            this.BeginStoryboard(storyboard, HandoffBehavior.SnapshotAndReplace, false);
        }), null);
    }

顺便说一句，我已经创建了这个方法的通用版本，用于为我的菜单等大小设置动画，并且效果很好。这似乎只是 Window 动画的问题。有谁知道如何修复它并为窗口宽度和高度应用动画？我关注了 SO 中的答案，但所有这些都与 Window 以外的元素有关。

Answer 1

从 heightAnimation 中移除持续时间。