.NET WPF c#旋转动画

2.创建一个border设置border的属性,添加到canvas里
3.添加动画

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Media.Animation;//动画的命名空间
namespace _02旋转动画
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Border br = new Border();
            br.Width = br.Height = 200;
            Canvas.SetLeft(br, 200);
            Canvas.SetTop(br, 200);
            BG.Children.Add(br);
            br.Background = Brushes.Red;
            br.CornerRadius = new CornerRadius(50);
           

            //设置旋转的方向
            RotateTransform rotate = new RotateTransform();
            //给对象绑定旋转中心
            br.RenderTransform = rotate;
            //旋转中心设置(百分比)
            br.RenderTransformOrigin = new Point(0.5, 0.5);

            Storyboard story = new Storyboard();//1.找剧本,故事本
            DoubleAnimation da = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(3)));//两点动画:差值动画; 括号里设置动画的起始值,动画的终止值,动画的进行时间;
            Storyboard.SetTarget(da, br); //设置某个动画的男女一号(主角)
            //设置动画的属性
            Storyboard.SetTargetProperty(da, new PropertyPath("RenderTransform.Angle"));//欧拉角
            da.RepeatBehavior = RepeatBehavior.Forever;//重复
            story.Children.Add(da);
            story.Begin();
        }
    }
}