public static IEnumerable <UserPermissionModel> SelectUserPermissionByPage(int page, int pageSize) { var dt = DALUserPermission.SelectUserPermissionByPage(page, pageSize); if (dt == null || dt.Rows.Count <= 0) { return(new UserPermissionModel[0]); } return(dt.Rows.Cast <DataRow>().Select(row => new UserPermissionModel(row))); }