Question

我的代码每5分钟执行一次，如果日期更改，我会在5分钟内执行代码。如何处理，请帮助

我想我需要检查currenttime.addminutes（5）并检查日期更改，如果日期更改，则需要设置计时器，以便我的代码可以运行可以任何人帮助他如何实现这个

 if (Daily == "true")//run daily at 11:59:59
     {
      DateTime currentTime = DateTime.Now;
      int intervalToElapse = 0;
      DateTime scheduleTime = new DateTime(currentTime.Year, currentTime.Month, currentTime.Day, 23, 59, 59, 999);

     if (currentTime <= scheduleTime)
   intervalToElapse = (int)scheduleTime.Subtract(currentTime).TotalSeconds;
                                    else
                                        intervalToElapse = (int)scheduleTime.AddDays(1).Subtract(currentTime).TotalSeconds;

                                    _DailyTimer = new System.Timers.Timer(intervalToElapse);
                                    if (_DailyTimer.Interval == 0)//if date changes this will be false and the code will not run
                                    {
                                        string tempFilename = Convert.ToString(tempDailyTime.TimeOfDay).Replace(":", "-") + ".xlsx";
                                        if (!File.Exists(tempDir + "\\Daily" + "\\" + ReportName + "_" + tempFilename))
                                        {
                                            GenerateDailyReport(ReportName, ReportID, ConnectionString, ReportColumnName, ReportBQuery, "00:00:00", "23:59:59", tempDir + "\\Daily", tempFilename);
                                        }
                                    }

                                }

Answer 1

上面代码的问题是我试图检查经过的时间并将其与零进行比较。相反，如果标识了日期更改，并使用当前日期更改进行检查，这显然意味着时间已过，因此代码将运行并成功创建报告。

private DateTime _lastRun = DateTime.Now.AddDays(-1);
    if (Daily == "true")
                            {
                                //DateTime currentTime = DateTime.Now;

                                //int intervalToElapse = 0;
                                //DateTime scheduleTime = new DateTime(currentTime.Year, currentTime.Month, currentTime.Day, 23, 59, 59, 999);

                                //if (currentTime <= scheduleTime)
                                //    intervalToElapse = (int)scheduleTime.Subtract(currentTime).TotalSeconds;
                                //else
                                //    intervalToElapse = (int)scheduleTime.AddDays(1).Subtract(currentTime).TotalSeconds;

                                //_DailyTimer = new System.Timers.Timer(intervalToElapse);
                                //if (_DailyTimer.Interval == 0)
                                //{
                                if (_lastRun.Date < DateTime.Now.Date)
                                {
                                    DateTime schTime = new DateTime(_lastRun.Year, _lastRun.Month, _lastRun.Day, 23, 59, 59, 999);
                                    string tempFilename = Convert.ToString(tempDailyTime.TimeOfDay).Replace(":", "-") + ".xlsx";
                                    if (!File.Exists(tempDir + "\\Daily" + "\\" + ReportName + "_" + tempFilename))
                                    {
                                        GenerateDailyReport(ReportName, ReportID, ConnectionString, ReportColumnName, ReportBQuery,Convert.ToString(_lastRun.Date), Convert.ToString(schTime), tempDir + "\\Daily", tempFilename);
_lastRun = DateTime.Now;
                                    }
                                }
                                //}

                            }

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