public PiService(IPiRepository piRepository, IPiDetailRepository piDetailRepository, IPiDetailService piDetailService, ICommodityCustomerRepository customerRepository)
 {
     this.piRepository       = piRepository;
     this.piDetailRepository = piDetailRepository;
     this.piDetailService    = piDetailService;
     this.customerRepository = customerRepository;
 }
 public PiController(IPiService piService, IPiDetailService piDetailService)
 {
     _piService       = piService;
     _piDetailService = piDetailService;
 }