public void AddItem(Product product, int quantity)
{
CartItem cartItem = ItemsInCart.Where(p => p.Product.ID == product.ID).FirstOrDefault();
if (cartItem == null)
{
ItemsInCart.Add(new CartItem {
Product = product, Quantity = quantity
});
}
else
{
cartItem.Quantity += quantity;
}
CartContentChanged?.Invoke(this, new CartChangedArgs(this));
}
public void RemoveItem(Product product, int quantity)
{
CartItem cartItem = ItemsInCart.Where(p => p.Product.ID == product.ID).FirstOrDefault();
if (cartItem != null)
{
if (cartItem.Quantity <= quantity)
{
RemoveItem(product);
}
else
{
cartItem.Quantity -= quantity;
}
CartContentChanged?.Invoke(this, new CartChangedArgs(this));
}
}
private void RaiseCartContentChanged(IProduct product, int amount, bool added)
{
CartContentChanged?.Invoke(this, new CartContentChangedEventArgs(product, amount, added, GetTransactionValue()));
}
public void Empty()
{
ItemsInCart.Clear();
CartContentChanged?.Invoke(this, new CartChangedArgs(this));
}