public void AddItem(Gadget gadget, int quantity)
{
CartLine line = lineCollection
.Where(p => p.Gadget.GadgetId == gadget.GadgetId)
.FirstOrDefault();
if (line == null)
{
lineCollection.Add(new CartLine
{
Gadget = gadget,
Quantity = quantity
});
}
else
{
line.Quantity += quantity;
}
}
public void RemoveLine(Gadget gadget)
{
lineCollection.RemoveAll(l => l.Gadget.GadgetId == gadget.GadgetId);
}