|  |  | 
 |  |  |         { | 
 |  |  |             try | 
 |  |  |             { | 
 |  |  |                 var newTasks = _taskService.Db.Queryable<Dt_Task>().Where(x => x.TaskState == TaskStatusEnum.New.ObjToInt() && nameof(AGV_FLJob).Contains(x.DeviceCode)).ToList().OrderBy(x => x.Grade).ThenBy(x => x.CreateDate).ToList(); | 
 |  |  |                 var newTasks = _taskService.Db.Queryable<Dt_Task>().Where(x => x.TaskState == TaskStatusEnum.New.ObjToInt() && nameof(AGV_FLJob).Contains(x.DeviceCode) && !string.IsNullOrEmpty(x.DeviceCode)).ToList().OrderBy(x => x.Grade).ThenBy(x => x.CreateDate).ToList(); | 
 |  |  |                 foreach (var task in newTasks) | 
 |  |  |                 { | 
 |  |  |                     try |