public PriceRecord(int recordId, ProductShop productShop, double price, DateTime priceDate)
{
RecordId = recordId;
ProductShop = productShop;
Price = price;
PriceDate = priceDate;
}
public void RemoveProduct(ProductShop p)
{
Products.Remove(p);
}
public void AddProduct(ProductShop productShop)
{
Products.Add(productShop);
}
