autofac不同类继承同接口的问题，高手进

Question

接口：
    public interface IAbstraceCar
    {
        decimal CalculateStockValue();
    }类1：
class ShoppingCart : IAbstraceCar
    {
        protected IValueCalculator calculator;
        protected Product[] products;        public ShoppingCart(IValueCalculator calcParam)
        {
            calculator = calcParam;
        }        public virtual decimal CalculateStockValue()
        {
            products = new [] { 
            new Product() { Name = "Kayak", Price = 275M}, 
            new Product() { Name = "Lifejacket", Price = 48.95M},
            new Product() { Name = "Soccer ball", Price = 19.50M},
            new Product() { Name = "Stadium", Price = 79500M} 
                             };
            decimal totalValue = calculator.ValueProducts(products);
            return totalValue;
        }
    }
类2:
 class LimitShoppingCart:ShoppingCart
    {
        public decimal ItemLimit { get; set; }        public LimitShoppingCart(IValueCalculator calcParam)
            : base(calcParam)
        {           
        }        public override decimal CalculateStockValue()
        {
            Product[] products = { 
            new Product() { Name = "Kayak", Price = 275M}, 
            new Product() { Name = "Lifejacket", Price = 48.95M},
            new Product() { Name = "Soccer ball", Price = 19.50M},
            new Product() { Name = "Stadium", Price = 79500M} 
                             };            
            var filteredProducts = products.Where(e => e.Price < ItemLimit);
            return calculator.ValueProducts(filteredProducts.ToArray());
        } 
    }MVC中调用:
 public class ProductController : Controller
    {
        //
        // GET: /Product/        private IAbstraceCar _sc;        public ProductController(IAbstraceCar sc)
        {
            this._sc = sc;
        }
    }请问怎样可以在MVC里指定调用ShoppingCart 或者 LimitShoppingCart,因为它们都是继承同一接口，望高手指点

Answer 1

new ProductController(new ShoppingCart())//sc指向ShoppingCart
new ProductController(new LimitShoppingCart())//sc指向LimitShoppingCart

Answer 2

global里是这样写的：
            builder.RegisterType<LimitShoppingCart>().As<IAbstraceCar>().InstancePerHttpRequest();
            builder.RegisterType<ShoppingCart>().As<IAbstraceCar>().InstancePerHttpRequest().PreserveExistingDefaults();MVC中老是只运行LimitShoppingCart,我想我怎样可以自由的选择要运行LimitShoppingCart或者ShoppingCart

Answer 3

builder.Register(c => new ProductController(c.ResolveNamed<Interface>("给具体类型配置不同的名称")));

Answer 4

例子:    public interface ISinger { }    public class MizukiNana : ISinger { }    public class ShimotsukiHaruka : ISinger { }    public class Stage
    {
        public ISinger Singer { get; set; }        public Stage(ISinger singer)
        {
            this.Singer = singer;
        }
    }    class Program
    {
        static void Main(string[] args)
        {
            var builder = new ContainerBuilder();
            builder.RegisterType<MizukiNana>().Named<ISinger>("nana");
            builder.RegisterType<ShimotsukiHaruka>().Named<ISinger>("haruka");
            builder.Register(c => new Stage(c.ResolveNamed<ISinger>("nana")));
            var container = builder.Build();            var stage = container.Resolve<Stage>();
            Console.WriteLine(stage.Singer.ToString());
        }
    }

Answer 5

请问高手，如果在MVC里两个Car都要用到，要怎样写
MVC中调用:
 public class ProductController : Controller
  {
  //
  // GET: /Product/  private IAbstraceCar _sc;  public ProductController(IAbstraceCar sc)
  {
  this._sc = sc;
  }
  }我在global里用Name的方式注册了，运行后会报错，说找不到指定的类型

Answer 6

builder.Register(c => new ProductController(c.ResolveNamed<ICart>("name"));
这一步有了吗

Answer 7

请问KarasCanvas如果在写winform的时候要用autofac+WPF，要一个怎样的构思啊，谢谢