定时任务

使用backgroundWorker+Timer+Parallel+ProgressBar

System.Timers.Timer timer = new System.Timers.Timer();//计时器

private bool isCancel;//是否终止线程

private int Minutes;//任务间隔时间

#region 定时执行任务
private void timeTask()
{
   if (Minutes <= 0)
   {
    Minutes = 10;
   }
   timer.Interval = Minutes * 60000;
   timer.Enabled = true;
   timer.AutoReset = true;
   timer.Elapsed += new System.Timers.ElapsedEventHandler(Timer_Elapsed);
}

private void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
    StartWorker();
}
#endregion

#region backgroundWorker
        /// <summary>
        /// 开始工作
        /// </summary>
        private void StartWorker()
        {
            if (this.backgroundWorker1.IsBusy)//启动时候判断是否还在运行
            {
                return;
            }
            isCancel = false;//是否终止停止任务this.backgroundWorker1.WorkerReportsProgress = true;
            this.backgroundWorker1.WorkerSupportsCancellation = true;
            this.backgroundWorker1.RunWorkerAsync();//启动任务
        }

        /// <summary>
        /// 暂停任务
        /// </summary>
        private void CancelStop()
        {
            if (this.backgroundWorker1.IsBusy)//启动时候判断是否还在运行
            {
                this.backgroundWorker1.CancelAsync();//提前终止任务
            }
            else
            {
             StopHandel();
            }
        }
        //停止定时任务
        private void StopHandel()
        {
            this.Invoke(new Action(() => timer.Stop()));
        }
        //刷新进度
        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.Invoke(new Action(() => this.pbcalculate.Value = e.ProgressPercentage));//刷新进度条
            this.Invoke(new Action(() => this.labitems.Text = "提交进度：" + e.UserState.ToString()));//lable文本显示百分比
            this.Invoke(new Action(() => this.labitems.Update()));
        }
        //工作线程
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            var ReportAction = new Action<int, int>((counts, index) =>
            {
                decimal indexs = (decimal)index; decimal count = (decimal)counts;
                decimal items = (indexs * 10000) / count;
                var i = (items / 100).ToString("0.00");
                int it = Convert.ToInt32(items);
                this.backgroundWorker1.ReportProgress(it, String.Format("{0}%", i));
                if (this.backgroundWorker1.CancellationPending)//是否结束线程
                {
                    e.Cancel = true;
                    isCancel = true;
                    StopHandel();
                }
            });
            HandelDatas(ReportAction);
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Cancelled)//是否提前结束任务
            {
                SetInfo("任务终止...");
            }
            else
            {
                SetInfo("休眠中...");
            }
        }
        #endregion

private void UpdataPaths(List<string> data, Action<int, int> ReportProcess)
{

int counts = data.Count;//数据量
int Process = 0;
Exception exception = null;
object objLock = new object();
Parallel.For(0, counts, new ParallelOptions() { MaxDegreeOfParallelism = 5 }, (i, loopState) =>
{
if (exception != null) return;
lock (objLock)
{
string error = "";
  try
  {
    if (isCancel)
       loopState.Break();
      //处理任务
      Process++;
    if (ReportProcess != null)
        ReportProcess(data.Count, Process);
 }
  catch (Exception ex)
 {
   error = ex.Message;
   exception = ex;
  }
}
});
if (exception != null) throw exception;
}

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