/// <summary>
/// 从购物车中移除一个商品
/// </summary>
/// <param name="sku">货品编号（唯一） </param>
/// <returns>返回移除</returns>
public void Remove(string sku)
{
lock (_sync)
{
if (CartItems != null)
{
CartItems.RemoveAll(p => sku != null && p.SKU == sku);
}
}
}
public int RemoveProduct(IProduct product, int amount = 1)
{
if (!CartProductIds.Contains(product.GetId()))
{
throw new InvalidOperationException("No such product in a cart");
}
ICartItem item = CartItems.Find(cartItem => cartItem.GetProduct().Equals(product));
if (item == null)
{
throw new InvalidOperationException("Item exist in HashSet but not in CartItems");
}
if (item.GetAmount() != amount)
{
return(item.DecreaseAmountOn(amount));
}
// here item should be deleted
CartProductIds.Remove(product.GetId());
CartItems.RemoveAll(cartItem => cartItem.GetProduct().Equals(product));
return(0);
}
public void ClearCart()
{
CartItems.RemoveAll(r => r.isProduct == true);
CartItems.RemoveAll(r => r.isProduct == false);
}