//POST check Time public int checkTime([FromBody]string key) { SQL sql = new SQL(); Guid gu = new Guid(key); times times = sql.checkTime(gu); DateTime start = Convert.ToDateTime(times.start_time); int lesstime = times.allowed_time - 5; if (DateTime.Now < start.AddMinutes(times.allowed_time)) { if (DateTime.Now > start.AddMinutes(lesstime)) { return 3; } else { return 2; } } else { return 1; } }