C# Linq 到 xml。嵌套在父对象中的项目

Question

我在 linq 查询中遇到问题，然后将其序列化为 xml，我希望有人能看到我哪里出错了。 Linq 对我来说仍然有点陌生，所以任何帮助将不胜感激。

这是我的 linq 查询

var orders = (from o in db.orders
              where o.id == id
              select new Order
              {
                  OrderID = o.order_reference,
                  DeliveryAddress = new DeliveryAddress()
                  {
                      AddressLine1 = o.customer.address.address_1
                  },
                  OrderItem = (from oi in db.order_items
                               where oi.order_id == o.id
                               select new OrderItem()
                               {
                                   Item = oi.Item
                               }).ToList()
              }
              ).ToList();

这是 xml 输出

<Order>
    <OrderID>W0003579579</OrderID>
    <DeliveryAddress>
        <AddressLine1>Address</AddressLine1>
    </DeliveryAddress>
    <OrderItem>
        <OrderItem>
            <Item>T-Shirt</Item>
        </OrderItem>
        <OrderItem>
            <Item>Jumper</Item>
        </OrderItem>
    </OrderItem>
</Order>

问题是，我希望 OrderItem 不要像这样成为 OrderItem 的子项

<Order>
    <OrderID>W0003579579</OrderID>
    <DeliveryAddress>
        <AddressLine1>Address Line 1</AddressLine1>
    </DeliveryAddress>
    <OrderItem>
        <Item>T-Shirt</Item>
    </OrderItem>
    <OrderItem>
        <Item>Jumper</Item>
    </OrderItem>
</Order>

这是我的模型

public class Order
{
    public string OrderID { get; set; }
    public DeliveryAddress DeliveryAddress { get; set; }
    public List<OrderItem> OrderItem { get; set; }
}

public class DeliveryAddress
{
    public string AddressLine1 { get; set; }
}

public class OrderItem
{ 
    public string Item { get; set; }
}

这是我的 xml 序列化程序

    private XDocument Serialize<T>(T source)
    {
        XDocument target = new XDocument();
        XmlSerializer s = new XmlSerializer(typeof(T));
        System.Xml.XmlWriter writer = target.CreateWriter();
        s.Serialize(writer, source);
        writer.Close();
        return target;
    }

Answer 1

尝试像这样注释你的类:

public class Order
{
    public string OrderID { get; set; }
    public DeliveryAddress DeliveryAddress { get; set; }

    [XmlElement("OrderItem")]
    public List<OrderItem> OrderLine { get; set; }
}