Function with Timeout

 

  /// <summary>        /// if one drive broken, use [Directory.Exists] may cause 10 seconds,        /// so design this function with timeout.        /// </summary>        /// <param name="path"></param>        /// <param name="timeout"></param>        /// <returns></returns>        public static bool? CheckPathExistWithTimeout(string path, double timeout)        {            bool isWait = true;            bool? isReady = null;            CancellationTokenSource cancelSource = new CancellationTokenSource();            Task.Factory.StartNew(() =>            {                isReady = Directory.Exists(path);                isWait = false;            }, cancelSource.Token);            int ticks = 0;            while (isWait)            {                if (ticks >= timeout * 1000)                {                    break;                }                ticks++;                Thread.Sleep(TimeSpan.FromMilliseconds(1));            }            cancelSource.Cancel();            return isReady;        }