Parallel的使用

           Action<int, int> ReportProcess //返回数据，刷新进度
           Exception exception = null;
            object objLock = new object();
            Parallel.For(, counts, new ParallelOptions() { MaxDegreeOfParallelism =  }, (i, loopState) =>
            {
                if (exception != null) return;
                lock (objLock)
                {
                    try
                    {
                        if (isCancel)//是否结束
                            loopState.Break();
                        //处理
                        Process++;if (ReportProcess != null)
                            ReportProcess(data.Count, Process);
                    }
                    catch (Exception ex)
                    {
                        data[i].error = ex.Message;
                        exception = ex;
                    }
                }
            });
            if (exception != null) throw exception;