public void RemoveItem(string product_id)
{
RackItem obj = _itemList.FirstOrDefault(x => x._productID.Equals(product_id));
if (obj != null)
{
obj._quantity--;
_num_items--;
_expectedPickQuantity--;
if (obj._quantity == 0)
{
_itemList.Remove(obj);
}
}
}
public void AddItem(string product_id)
{
_num_items++;
_expectedSlotQuantity--;
RackItem obj = _itemList.FirstOrDefault(x => x._productID.Equals(product_id));
if (obj != null)
{
obj._quantity++;
}
else
{
_itemList.Add(new RackItem(product_id, 1));
}
}