WPF 在单独的 UI 线程上加载动画 （C＃）

如何在WPF中的单独UI线程上加载动画？

csharp
using System;
using System.Threading;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;
namespace WpfAnimationOnSeparateUIThread
{
    public partial class MainWindow : Window
    {
        private Thread animationThread;
        public MainWindow()
        {
            InitializeComponent();
        }
        private void StartAnimationButton_Click(object sender, RoutedEventArgs e)
        {
            // 创建并启动新的线程
            animationThread = new Thread(new ThreadStart(StartAnimation));
            animationThread.SetApartmentState(ApartmentState.STA);
            animationThread.Start();
        }
        private void StartAnimation()
        {
            // 在单独的UI线程上加载动画
            DoubleAnimation animation = new DoubleAnimation();
            animation.From = 0;
            animation.To = 360;
            animation.Duration = new Duration(TimeSpan.FromSeconds(5));
            animation.RepeatBehavior = RepeatBehavior.Forever;
            // 创建动画控件
            Ellipse ellipse = new Ellipse();
            ellipse.Width = 100;
            ellipse.Height = 100;
            ellipse.Fill = System.Windows.Media.Brushes.Red;
            // 将动画应用于控件
            ellipse.BeginAnimation(Ellipse.RenderTransformProperty, animation);
            // 将控件添加到UI线程的主窗口中
            Dispatcher.BeginInvoke(new Action(() =>
            {
                MainGrid.Children.Add(ellipse);
            }));
        }
    }
}