用DispatcherTimer褪色

Question

在我的uwp项目中，我在图片上有3种不同的颜色覆盖(绿色、黄色和红色)。这些颜色应该用来表示房间(在这种情况下，房间是一张照片)是否已被预订。

如果房间被预订了，它应该会淡出green color，在red color上淡出，然后7秒后，red color应该淡出yellow color，最后yellow color应该再次淡出green color。

1. 对于褪色，我正在使用Windows Animation extension for UWP。
2. Green Color设置为默认设置。

现在，当一个房间被预定时，第一个淡出正在工作(红色到黄色)，但是Yellow到Green没有褪色。

    public void RedIndicatorColorToYellowIndicatorColor()
    {
        StatusColor.Fade(duration: 1000, delay: 2000, value: 0).Start();
        StatusColor.Fill = RedBrush;
        DispatcherTimer ColorTimer = new DispatcherTimer();
        ColorTimer.Interval = TimeSpan.FromSeconds(7);
        ColorTimer.Tick += (Sender, args) =>
        {
            YellowindIcatorColorToGreenIndicatorColor();
            ColorTimer.Stop();
        };
        ColorTimer.Start();
    }

    public void YellowindIcatorColorToGreenIndicatorColor()
    {
        StatusColor.Fade(duration: 1000, delay: 0, value: 1).Start();
        StatusColor.Fill = YellowBrush;
        DispatcherTimer ColorTimer2 = new DispatcherTimer();
        ColorTimer2.Interval = TimeSpan.FromSeconds(7);
        ColorTimer2.Tick += (Zender, Args) =>
        {
            StatusColor.Fill = GreenBrush;
            ColorTimer2.Stop();
        };
        ColorTimer2.Start();
    }

StatusColor是容纳颜色覆盖的矩形。

Answer 1

解决了问题！

public void RedIndicatorColorToYellowIndicatorColor()
            {
                StatusColor.Fill = GreenBrush;
                DispatcherTimer ColorTimer = new DispatcherTimer();
                ColorTimer.Interval = TimeSpan.FromSeconds(7);
                ColorTimer.Tick += async (Sender, args) =>
                {
                    await StatusColor.Fade(duration: 1000, delay: 0, value: 0).StartAsync();
                    StatusColor.Fill = RedBrush;
                    await StatusColor.Fade(duration: 1200, delay: 0, value: 1).StartAsync();

                    YellowindIcatorColorToGreenIndicatorColor();
                    ColorTimer.Stop();
                };
                ColorTimer.Start();
            }

            public void YellowindIcatorColorToGreenIndicatorColor()
            {
                DispatcherTimer ColorTimer2 = new DispatcherTimer();
                ColorTimer2.Interval = TimeSpan.FromSeconds(7);
                ColorTimer2.Tick += async (Zender, Args) =>
                {
                    await StatusColor.Fade(duration: 1000, delay: 0, value: 0).StartAsync();
                    StatusColor.Fill = YellowBrush;
                    await StatusColor.Fade(duration: 1200, delay: 0, value: 1).StartAsync();

                    red2green();
                    ColorTimer2.Stop();
                };
                ColorTimer2.Start();
            }