przestrzeń nazw NinjectDemo { Klasa publicznaProdukt { public int ProductID {get; zestaw; } public string Name {get; zestaw; } public string Opis {get; zestaw; } public decimal Cena {get; zestaw; } public string Kategoria {get; zestaw; } }
public interface IValueCalculator
{
decimal ValueProducts(params Product[] products);
}
public class LinqValueCalculator : IValueCalculator
{
private IDiscountHelper discounter;
public LinqValueCalculator(IDiscountHelper discountParam)
{
discounter = discountParam;
}
public decimal ValueProducts(params Product[] products)
{
return discounter.ApplyDiscount(products.Sum(p => p.Price));
}
}
public class ShoppingCart
{
private IValueCalculator calculator;
public ShoppingCart(IValueCalculator calcParam)
{
calculator = calcParam;
}
public decimal CalculateStockValue()
{
Product[] products = {
new Product() {Name = "Kajak", 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;
}
}
public interface IDiscountHelper
{
decimal ApplyDiscount(decimal totalParam);
}
public class DefaultDiscountHelper: IDiscountHelper
{
public decimal ApplyDiscount(decimal totalParam)
{
return (totalParam - (10m / 100m * totalParam));
}
}
class Program
{
static void Main(string[] args)
{
IKernel ninjectKernel = new StandardKernel();
ninjectKernel.Bind<IValueCalculator>().To<LinqValueCalculator>();
ninjectKernel.Bind<IValueCalculator>().To<DefaultDiscountHelper>();//error
IValueCalculator calcImpl = ninjectKernel.Get<IValueCalculator>();
ShoppingCart cart = new ShoppingCart(calcImpl);
Console.WriteLine("Total: {0:c}", cart.CalculateStockValue());
}
}
</ pre>
}
ninjectKernel.Bind (). To (); napisz błąd, jaki może być problem?
Odpowiedzi:
3 dla odpowiedzi № 1
DefaultDiscountHelper nie implementuje IValueCalculator
pewnie chcesz się związać IDiscountHelper
