public List <SelectListItem> GetActivities(string operationNumber, int year) { var list = new List <SelectListItem>(); var listRepository = _missionService.GetActivitiesByOperationAndYear(operationNumber, year); if (listRepository.Activity != null && listRepository.Activity.Count > 0) { list = listRepository.Activity.Select(o => new SelectListItem { Selected = false, Value = o.ActivityId.ToString(), Text = o.Description }).ToList(); } return(list); }