c# Winform UI异步委托

public class UISync
    {
        private static ISynchronizeInvoke Sync;

        public static void Init(ISynchronizeInvoke sync)
        {
            Sync = sync;
        }

        public static void Execute(Action action)
        {
            Sync.BeginInvoke(action, null);
        }
    }

    public partial class Form1 : Form
    {
        TrackBar trackBar1 = new TrackBar();
        Label lblTime = new Label();
        Label lblDuration = new Label();

        public Form1()
        {
            UISync.Init(this);
        }

        void Events_PlayerStopped(object sender, EventArgs e)
        {
            UISync.Execute(() => InitControls());
        }

        void Events_MediaEnded(object sender, EventArgs e)
        {
            UISync.Execute(() => InitControls());
        }

        private void InitControls()
        {
            trackBar1.Value = 0;
            lblTime.Text = "00:00:00";
            lblDuration.Text = "00:00:00";
        }

        void Events_TimeChanged(object sender, EventArgs e)
        {
            UISync.Execute(() => lblTime.Text = TimeSpan.FromMilliseconds(DateTime.Now.Millisecond).ToString().Substring(0, 8));
        }

        void Events_PlayerPositionChanged(object sender, EventArgs e)
        {
            UISync.Execute(() => trackBar1.Value = (int)(88 * 100));
        }


        void Events_DurationChanged(object sender, EventArgs e)
        {
            UISync.Execute(() => lblDuration.Text = TimeSpan.FromMilliseconds(DateTime.Now.Millisecond).ToString().Substring(0, 8));
        }
    }