Ninject使用demo

public class HomeController : Controller
    {
        public ActionResult Index()
        {
            //核心对象
            IKernel ninjectKernel = new StandardKernel();

       
            ninjectKernel.Bind<IValueCaculator>().To<LinqValueCalcalator>();

            //方案1：获取接口实例
            IValueCaculator calImpl = ninjectKernel.Get<IValueCaculator>();

            //方案2:自身绑定
            //ShoppingCart cart = ninjectKernel.Get<ShoppingCart>();

            //cart1.Products = new List<Product>() { new Product() { Category = "food", Price = 12 }, new Product() { Category = "books", Price = 30 }, new Product() { Category = "wine", Price = 40 } };


            ShoppingCart cart = new ShoppingCart(calImpl) { Products = new List<Product> { new Product() { Category = "food", Price = 12 }, new Product() { Category = "books", Price = 30 }, new Product() { Category = "wine", Price = 40 } } };


            var sum=cart.Cal();
            return View();
        }

        public ActionResult About()
        {

            return View();
        }
    }
    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 { get; set; }

    }
    public interface IValueCaculator
    {
        decimal ValueProduct(IEnumerable<Product> products);
    }
    public class LinqValueCalcalator : IValueCaculator
    {
        public decimal ValueProduct(IEnumerable<Product> products)
        {
            return products.Sum(a => a.Price);
        }
    }
    public class ShoppingCart
    {
        protected IValueCaculator valueCaculator;

        public ShoppingCart(IValueCaculator caculator)
        {
            valueCaculator = caculator;
        }

        public IEnumerable<Product> Products { get; set; }

        public decimal Cal()
        {
            return valueCaculator.ValueProduct(Products);
        }
        
    }