public ProductRES ProductDTtoRES() { ProductRES productRES = new ProductRES() { Id = Id, ProductStatus = ProductStatus, ProductName = ProductName, Categories = ProductCategories != null?ProductCategories.Select(x => x.CategoryToRES()).ToList() : null, CreateDate = CreateDate, CreateUser = CreateUser != null?CreateUser.AppUserDTtoRES() : null, Discount = Discount, DiscountAmount = DiscountAmount, DiscountFinishDate = DiscountFinishDate, DiscountStartDate = DiscountStartDate, MainImage = MainImage, ProductImageGalleries = ProductImageGalleries != null?ProductImageGalleries.Select(x => x.ProductImageGalleryDTtoRES()).ToList() : null, UpdateDate = UpdateDate, UpdateUser = UpdateUser != null?UpdateUser.AppUserDTtoRES() : null, ProductAmountTypes = ProductAmountTypes.Select(x => x.ProductAmountTypeDTtoRES()).ToList(), LongDescription = LongDescription, ShortDescription = ShortDescription, }; return(productRES); }