Code:

public List
    
      getMissDateData()        {            DateTime[] keys = { DateTime.Now.AddDays(-5), DateTime.Now.AddDays(-3), DateTime.Now.AddDays(-1), };            List
     
       missingDate = new List
      
       ();            for (int i = 0; i < keys.Length; i++)            {                logger.Info("Orginal data:"+keys[i]);            }            if (keys.Length > 0)            {                DateTime firstDate = keys[0];                if (firstDate.Day > 1)                {                    int missingDateInt = firstDate.Day - 1;                    for (int i = missingDateInt; i > 0; i--)                    {                        missingDate.Add(firstDate.AddDays(-i));                    }                }                int keysLength = (keys[keys.Length - 1] - keys[0]).Days;                DateTime dtTemp = keys[0];                // firstDate = keys[0];                int count = keys.Length;                for (int i = 0; i < count; i++)                {                    Console.WriteLine(dtTemp.ToString(keys[i].ToString("yyyy-MM-dd HH:mm:ss")));                    while (DateTime.Compare(keys[i], dtTemp) != 0)                    {                        logger.InfoFormat("Actual Date:{0};  The date of the cumulative：{1}", keys[i].ToShortDateString(), dtTemp.ToShortDateString());                        logger.InfoFormat("{0}", DateTime.Compare(keys[i], dtTemp));                        //Console.WriteLine(String.Format("Actual Date:{0};  The date of the cumulative：{1}", keys[i].ToShortDateString(), dtTemp.ToShortDateString()));                       // Console.WriteLine(String.Format("{0}", DateTime.Compare(keys[i], dtTemp)));                        missingDate.Add(dtTemp);                        dtTemp = dtTemp.AddDays(1);                    }                    dtTemp = dtTemp.AddDays(1);                }            }            else            {                logger.InfoFormat("Has no new data:{0}", keys.Length);               // Console.WriteLine(String.Format("Has no new data:{0}", keys.Length));            }            for (int i = 0; i < missingDate.Count; i++)            {                logger.Info("Missing data:" + missingDate[i].ToShortDateString());                //Console.WriteLine("Missing data:" + missingDate[i].ToShortDateString());            }            return missingDate;        }
      
     
    

欢迎大家吐槽。