C# Thread.Sleep 不卡UI

//Thread.Sleep 不卡UI
//async await
//Task
//低版本也能用(委托的BeginInvoke);

AsyncCallback callBack = new AsyncCallback(s =>
{
    Console.WriteLine("执行完毕,开始回调");
});

private void labCopyCode_Click(object sender, EventArgs e)
{
    Clipboard.SetText(labCode.Text);
    SucceedUI(labCopyCode);
    
    Action act = new Action(ReCopyUI);
    act.BeginInvoke(labCopyCode, callBack, null);
}

private void labCopyLink_Click(object sender, EventArgs e)
{
    Clipboard.SetText(labLink.Text);
    SucceedUI(labCopyLink);
    
    Action act = new Action(ReCopyUI);
    act.BeginInvoke(labCopyLink, callBack, null);
}

static Color _red = Color.FromArgb(236, 68, 68);
static Color _blue = Color.FromArgb(0, 138, 220);

private void ReCopyUI(Label label) 
{
    Console.WriteLine("ReUI线程ID:{0}", Thread.CurrentThread.ManagedThreadId);
    Thread.Sleep(3000);
    this.Invoke((Action)delegate{
        label.Width = 44;
        label.Text = "复制";
        label.ForeColor = _blue;
        label.BorderStyle = BorderStyle.FixedSingle;
    });
}

private void SucceedUI(Label label) 
{
    Console.WriteLine("SucceedUI线程ID:{0}", Thread.CurrentThread.ManagedThreadId);
    label.Width = 72;
    label.Text = "复制成功";
    label.ForeColor = _red;
    label.BorderStyle = BorderStyle.None;
}