public override uint GetPrice()
{
#if DEBUG
WriteLine("SaleDecorator : GetPrice");
#endif
return(BookPrice.GetPrice());
}
string GetStringProduct(IProduct product, )
{
decimal total = (decimal)(product.GetAmount() * _price.GetPrice(product));
string text = product.GetName().PadRight(20, '.') + product.GetAmount() + " X " + _price.GetPrice(product) + " = " + total.ToString();
return(text);
}
//TODO: may be "GetDefaultPrice" is a better name for the method
public static IEnumerable <Price> GetPrice(this IPrice price)
{
if (null == price)
{
throw new ArgumentNullException("price");
}
return(price.GetPrice((DateTime?)null));
}
/// <summary>
/// 计算折后价
/// </summary>
public double GetPrice(string discountType)
{
return(IPrice.GetPrice(Price));
}