public async Task <bool> Update()
{
string startTime = HttpContext.Request.Form["startTime"];
string endTime = HttpContext.Request.Form["endTime"];
string startPointId = HttpContext.Request.Form["startPointId"];
string endPointId = HttpContext.Request.Form["endPointId"];
string timeSlotIdStr = HttpContext.Request.Form["timeSlotId"];
int timeSlotId = int.Parse(timeSlotIdStr);
return(await _service.UpdateTimeSlot(timeSlotId, startTime, endTime, startPointId, endPointId));
}