public void AddItem(disks dissk, int quantity)
{
CartLine line = lineCollection
.Where(g => g.disk.id == dissk.id)
.FirstOrDefault();
if (line == null)
{
lineCollection.Add(new CartLine
{
disk = dissk,
Quantity = quantity
});
}
else
{
line.Quantity += quantity;
}
}
public void RemoveLine(disks dissk)
{
lineCollection.RemoveAll(l => l.disk.id == dissk.id);
}