public async Task <JsonResult> TAUpdate()
 {
     try {
         var id  = Guid.Parse(Request.Form["id"]);
         var oid = Guid.Parse(Request.Form["oid"]);
         var api = Guid.Parse(Request.Form["aid"]);
         var et  = DateTime.Parse(Request.Form["et"]);
         var dt  = DateTime.Parse(Request.Form["dt"]);
         if (TimerAppService.Update(id, oid, api, et, dt))
         {
             return(Success(id.ToString()));
         }
         return(Failed(MessageUtility.ServerError()));
     } catch { return(Failed(MessageUtility.ServerError())); }
 }