public IEnumerable <PortfolioModel> GetPortfolios(int pageSize, int pageIndex) { try { var portfolioDto = _portfolioManager.GetAllPortfolios(pageSize, pageIndex); if (portfolioDto == null) { return(null); } return(_mapper.Map <IEnumerable <Portfolio>, IEnumerable <PortfolioModel> >(portfolioDto)); } catch (Exception ex) { throw ex; } }