public void ProductRegistration(Product productToRegister)
{
Seller soughtSeller = sellerList.Find(x => x.TaxNumber == productToRegister.SellerTaxNumber);
if (soughtSeller != null)
{
soughtSeller.ProductList.Insert(productToRegister);
productsList.Insert(productToRegister);
}
}
public bool SellerInsert(Seller newSeller)
{
var seller = sellerList.Find(x => x.TaxNumber == newSeller.TaxNumber);
if (seller == null)
{
sellerList.Insert(newSeller);
return(true);
}
else
{
throw new SellerExists(newSeller as Seller);
}
}
public bool BuyerInsert(Buyer newBuyer)
{
var buyer = buyerList.Find(x => x.TaxNumber == newBuyer.TaxNumber);
if (buyer == null)
{
buyerList.Insert(newBuyer);
return(true);
}
else
{
throw new BuyerExists(newBuyer as Buyer);
}
}