public ProductExportToPdfService(ProductPriceCalcuateService productPriceCalcuateService)
 {
     this.productPriceCalcuateService = productPriceCalcuateService;
 }
 public ProductItemViewModel(ProductService productService, 
     domain.Product domainProduct, 
     IEventAggregator eventAggregator,
     ProductPriceCalcuateService productPriceCalcuateService)
 {            
     this.productService = productService;
     this.productPriceCalcuateService = productPriceCalcuateService;
     this.eventAggregator = eventAggregator;
     this.domainProduct = domainProduct;
     this.domainProduct.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(domainProduct_PropertyChanged);
 }