private void BuyOne(User user,
IEnumerable <Product> products,
ReadOnlyCollection <Carrier> carriers)
{
List <Task> tasks = new List <Task>();
foreach (var product in products)
{
tasks.Add(Task.Run(() =>
{
saleService.Buy(new Purchase
{
Product = product,
User = user,
Quantity = 1,
Payment = saleService.GetModeOfPayment(),
Carrier = carrierService.GetCarrier(carriers).Name,
PurchasedOn = DateTime.Now
});
}));
}
Task.WhenAll(tasks);
}
