public void AddItem(Models.Good good, int quantity) { CartLine line = lineCollection .Where(g => g.good.Id == good.Id) .FirstOrDefault(); if (line == null) { lineCollection.Add(new CartLine { good = good, Quantity = quantity }); } else { line.Quantity += quantity; } }
public void RemoveLine(Models.Good good) { lineCollection.RemoveAll(l => l.good.Id == good.Id); }