Pro Aspnet MVC 4读书笔记(5) - Essential Tools for MVC
Listing 6-1. The Product Model Class
using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace EssentialTools.Models { public class Product { public int ProductId { get; set; } public string Name { get; set; } public string Description { get; set; } public decimal Price { get; set; } public string Category { set; get; } } }
Listing 6-2. The LinqValueCalculator Class
using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace EssentialTools.Models { public class LinqValueCalculator { public decimal ValueProducts(IEnumerable<Product> products) { return products.Sum(p => p.Price); } } }
Listing 6-3. The ShoppingCart Class
using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace EssentialTools.Models { public class ShoppingCart { private LinqValueCalculator _calculator; public ShoppingCart(LinqValueCalculator calculator) { _calculator = calculator; } public IEnumerable<Product> Products { get; set; } public decimal CalculateProductTotal() { return _calculator.ValueProducts(Products); } } }
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