C# 超时工具类 第二版

    /// <summary>
    /// 超时工具
    /// </summary>
    public class TimeoutTools
    {
        private Timer timer;

        /// <summary>
        /// 事件是否正在执行
        /// </summary>
        private bool EventRunning { get; set; }

        /// <summary>
        /// 位置
        /// </summary>
        private uint Position { get; set; }



        /// <summary>
        /// 超时事情
        /// </summary>
        public event EventHandler TimeoutEvent;

        /// <summary>
        /// 步长值
        /// <para>默认值1</para>
        /// </summary>
        public uint StepLength { get; set; }

        /// <summary>
        /// 超时长度
        /// <para>默认180</para>
        /// </summary>
        public uint TimeoutLength { get; set; }


        /// <summary>
        /// 默认构造函数
        /// </summary>
        public TimeoutTools()
        {
            this.StepLength = 1;
            this.TimeoutLength = 180;

            this.timer = new Timer((obj) =>
            {
                this.Position += this.StepLength;

                if (this.Position >= this.TimeoutLength)
                {
                    this.Reset();

                    this.OnTimeOut();
                }
            });

            // 一秒一次
            this.SetTimerParam(0, 1000);
        }



        ///<summary>        
        /// 指定超时时间 执行某个方法        
        ///</summary>
        ///<returns>执行 是否超时</returns>
        public static bool DoAction(TimeSpan timeSpan, Action action)
        {
            if (action == null)
                throw new ArgumentNullException("action is null");

            bool timeout = true;

            try
            {
                // 异步调用Action
                IAsyncResult result = action.BeginInvoke(null, null);                
                
                // Wait
                if (result.AsyncWaitHandle.WaitOne(timeSpan, false))
                {
                    timeout = false;
                }

                if (!timeout)
                {
                    action.EndInvoke(result);
                }
            }
            catch (Exception)
            {
                timeout = true;
            }

            return timeout;
        }


        /// <summary>
        /// 设置计时器参数
        /// </summary>
        /// <param name="dueTime">毫秒 默认值0</param>
        /// <param name="period">毫秒 默认值1000</param>
        public void SetTimerParam(int dueTime, int period)
        {
            this.timer.Change(dueTime, period);
        }


        /// <summary>
        /// 接收到信号
        /// </summary>
        public void Reset()
        {
            this.Position = 0;
        }


        protected void OnTimeOut()
        {
            if (this.EventRunning)
            {
                return;
            }

            this.EventRunning = true;

            if (this.TimeoutEvent != null)
            {
                this.TimeoutEvent(this, EventArgs.Empty);
            }

            this.EventRunning = false;
        }

    }