The service class ProductListExtensionMethods

The Apply method parameters return this error:

public static void Apply(this... Type expected

My code:

using System;
using System.Collections.Generic;
using System.Text;

namespace ASPPatterns.Chap3.Layered.Model
{
public static class ProductListExtensionMethods
{
public static void Apply(this IList<Product> products, IDiscountStrategy discountStrategy)
{

}
}
}

Any ideas?

I think Extension Methods only came with C# 3.0 so you'll need VS2008 or later.

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Joe
http://joe.fawcett.name/