private async Task SetDelegateProgress()
    {
        var delegateProgress = new UIDelegateProgress();
        delegateProgress.ProgressCompleted += () =>
        {
            autoResetEvent.Set();
        };
        DelegateProgress = delegateProgress;
        await Task.Run(() => { autoResetEvent.WaitOne(); });
    }

 1 /// <summary>
 2 /// 执行动画
 3 /// </summary>
 4 /// <param name="storyboard"></param>
 5 /// <returns></returns>
 6 public static async Task ExecuteStoryboradAsync([NotNull] Storyboard storyboard)
 7 {
 8     if (storyboard == null) throw new ArgumentNullException(nameof(storyboard));
 9 
10     AutoResetEvent autoResetEvent = new AutoResetEvent(false);
11 
12     storyboard.Completed += OnStoryboardCompleted;
13     storyboard.Begin();
14 
15     void OnStoryboardCompleted(object sender, EventArgs e)
16     {
17         storyboard.Completed -= OnStoryboardCompleted;
18         autoResetEvent.Set();
19     }
20 
21     await Task.Run(() => { autoResetEvent.WaitOne(); });
22 }