public async Task<JsonResult> Data([DataSourceRequest] DataSourceRequest request, string ownerLevel, string ownerId, string categoryId)
{
OwnerLevel oLevel;
if (!Enum.TryParse(ownerLevel, true, out oLevel))
throw new Exception("Unknown OwnerLevel [" + ownerLevel ?? "" + "]");
var list = await _assignmentManager.GetCategoriesAndAssignmentsOfOwnerQueryAsync(oLevel, ownerId);
var result = list.ToDataSourceResult(request);
result.Data = (result.Data as ICollection<AssignmentListItemViewModel>)
.OrderByDescending(x => x.CategoryName)
.ThenByDescending(x => x.DueDT)
.ToList();
return Json(result);
}