相关疑难解决方法(0)

我有这样的事情:

var itemsInCart = from o in db.OrderLineItems
                  where o.OrderId == currentOrder.OrderId
                  select new { o.OrderLineItemId, ..., ..., o.WishListItem.Price}

有没有办法做

itemsCart.Sum() //not sure what to pass into the function

得到o.WishListItem.Price的总和还是我必须从数据库中获取另一个iQueryable <T> with ... into？