public void AddItem(AruKeszlet product, decimal quantity)
{
CartLine line = lineCollection
.Where(p => p.Product.AruID == product.AruID)
.FirstOrDefault();
if (line == null)
{
lineCollection.Add(
new CartLine { Product = product, AruMennyiseg = quantity });
}
else
{
line.AruMennyiseg += quantity;
}
}
public void RemoveLine(AruKeszlet product)
{
lineCollection.RemoveAll(p => p.Product.AruID == product.AruID);
}