public string GetRolesGps() { List <SelectListItem> listI = new List <SelectListItem>(); List <SelectListItemPlain> listIP = new List <SelectListItemPlain>(); listI = _commonservices.GetRoleGroups(); string sdata = ""; if (listI.Count > 0) { listIP = _commonservices.ListPlain(listI); sdata = Objeto.SerializarLista(listIP, '|', '~', false); } return(sdata); }