public override List <StudentLists> getElements()
        {
            TrainingCenterEntities oEntities = ConnectionEntities.getTrainingCenter(mAcount);
            var oData = oEntities.SP_HienThi_DanhSach_HocVien_By03Month().ToList();
            List <StudentLists> lisStudent = new List <StudentLists>();
            Commons             oCommons   = new Commons();

            foreach (var o in oData)
            {
                StudentLists oStudentLists = new StudentLists();
                oStudentLists.Id           = o.Id;
                oStudentLists.FullName     = o.FullName;
                oStudentLists.SexString    = o.SexString;
                oStudentLists.Sex          = o.sex;
                oStudentLists.Mobile       = string.IsNullOrEmpty(o.Mobile) ? "" : o.Mobile /*oCommons.DecryptInfo(o.Mobile)*/;
                oStudentLists.DateBirthday = o.DateBirthday;
                oStudentLists.Email        = string.IsNullOrEmpty(o.Email) ? "" : o.Email /*oCommons.DecryptInfo(o.Email)*/;
                oStudentLists.Address      = o.Address;
                oStudentLists.DateBirthday = o.DateBirthday;
                oStudentLists.UserId       = o.UserId;
                oStudentLists.UserName     = o.UserName;
                oStudentLists.CourseId     = o.courseid;
                oStudentLists.CourseName   = o.CourseName;
                oStudentLists.StatusId     = o.StatusId;
                oStudentLists.StatusName   = o.StatusName;
                oStudentLists.Description  = o.Description;
                oStudentLists.DateCreate   = (DateTime)o.DateCreate;
                lisStudent.Add(oStudentLists);
            }
            return(lisStudent.Count <= 0 ? null : lisStudent);
        }