WPF 倒计时设置控件状态

      /// <summary>
        /// 设置控件变灰时间后恢复可用
        /// </summary>
        /// <param name="contorl">控件</param>
        /// <param name="time">变灰总时间（秒）</param>
        /// <param name="interval">时间段显示隔断时间（秒）</param>
        public static void SetContorlTimer(System.Windows.Controls.ContentControl contorl, int time, int interval = 1)
        {
            int nTime = time;
            int nInterval = interval;
            string sText = contorl.Content.ToString();
            contorl.IsEnabled = false;
            System.Windows.Threading.DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer();
            dispatcherTimer.Tick += new EventHandler(new Action<object, EventArgs>((sender, e) =>
            {
                if (nTime > 0)
                {
                    contorl.Content = string.Format("{0}({1})", sText, nTime);
                    contorl.IsEnabled = false;
                    nTime--;
                }
                else
                {
                    contorl.Content = sText;
                    contorl.IsEnabled = true;
                    dispatcherTimer.Stop();
                    dispatcherTimer = null;
                }
            }));
            dispatcherTimer.Interval = new TimeSpan(0, 0, nInterval);
            dispatcherTimer.Start();
        }

调用：

SystemAPI.SetContorlTimer(_backgroundPropertyUi.BGControl.BgPC_BtMusicApply, 3);