基于范围WPF的进度条前景颜色动画

<Window x:Class="ProgressBarAnimation.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="ProgressBar Animation" Height="200" Width="300">
    <Grid>
        <ProgressBar x:Name="progressBar" Minimum="0" Maximum="100" Value="0" Height="20" VerticalAlignment="Center">
            <ProgressBar.Foreground>
                <SolidColorBrush x:Name="progressBarBrush" Color="Green"/>
            </ProgressBar.Foreground>
        </ProgressBar>
    </Grid>
</Window>

using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Animation;

namespace ProgressBarAnimation
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            AnimateProgressBar();
        }

        private void AnimateProgressBar()
        {
            DoubleAnimation animation = new DoubleAnimation();
            animation.From = 0;
            animation.To = 100;
            animation.Duration = new Duration(TimeSpan.FromSeconds(5));

            Storyboard storyboard = new Storyboard();
            storyboard.Children.Add(animation);
            Storyboard.SetTarget(animation, progressBar);
            Storyboard.SetTargetProperty(animation, new PropertyPath(ProgressBar.ValueProperty));

            ColorAnimation colorAnimation = new ColorAnimation();
            colorAnimation.From = Colors.Green;
            colorAnimation.To = Colors.Red;
            colorAnimation.Duration = new Duration(TimeSpan.FromSeconds(5));

            Storyboard.SetTarget(colorAnimation, progressBarBrush);
            Storyboard.SetTargetProperty(colorAnimation, new PropertyPath(SolidColorBrush.ColorProperty));

            storyboard.Children.Add(colorAnimation);
            storyboard.Begin();
        }
    }
}