Windows服務定時運行，判斷當前時間是否在配置時間段內

 1         /// <summary>
 2         /// 判斷程式是否在設置運行時間內
 3         /// </summary>
 4         /// <param name="startTime">開始執行時間</param>
 5         /// <param name="overTime">執行結束時間</param>
 6         /// <returns>true：在執行時間內，false：在執行時間外</returns>
 7         private bool IsRunTime(string startTime, string overTime)
 8         {
 9             var flag = false;
10 
11             var beginTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " " + startTime);
12             var endTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " " + overTime);
13 
14             if (beginTime <= endTime)   // 當天
15             {
16                 flag = beginTime <= DateTime.Now && DateTime.Now <= endTime;
17             }
18             else    // 跨天
19             {
20                 var zeroTime = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd") + " 00:00");
21                 flag = (beginTime <= DateTime.Now && DateTime.Now <= zeroTime.AddDays(1)) || (zeroTime <= DateTime.Now && DateTime.Now <= endTime);
22             }
23 
24             return flag;
25         }