public ComparingProductController(
     UserManager <User> userManager,
     IRepository <ComparingProduct> comparingProductRepository,
     IComparingProductService comparingProductService,
     IProductPricingService productPricingService,
     IMediaService mediaService,
     IWorkContext workContext)
 {
     _comparingProductRepository = comparingProductRepository;
     _comparingProductService    = comparingProductService;
     _productPricingService      = productPricingService;
     _mediaService = mediaService;
     _workContext  = workContext;
 }
 public UserSignedInHandler(IWorkContext workContext, IComparingProductService comparingService)
 {
     _workContext      = workContext;
     _comparingService = comparingService;
 }