C# LINQ到XML嵌套元素

我可以读取XML并返回Order元素

我还需要返回ShippingAddress，它嵌套在Order元素中。（姓名、地址行1、城市、邮政编码、国家代码、电话）同时从XML响应中删除

请有人告诉我如何同时到达发货地址

我现在的代码是

private static IEnumerable<FormsPersistence> Addresses(XContainer doc)
    {
        XNamespace ns = "https://mws.amazonservices.com/Orders/2013-09-01";

        return from address in doc.Descendants(ns + "Order")
               select new FormsPersistence
               {
                   AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
                   PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
                   BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
                   BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
                   OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
               };
    }

    private static void OrderDetails(IEnumerable<FormsPersistence> addresses)
    {


        foreach (var address in addresses)
        {
            Console.WriteLine("---");
            Console.WriteLine(address.AmazonOrderId);
            Console.WriteLine(address.PurchaseDate);
            Console.WriteLine(address.BuyerName);
            Console.WriteLine(address.BuyerEmail);
            Console.WriteLine(address.OrderStatus);
            Console.WriteLine("---");
        }
    }

我补充说

class ShippingAddress
{
    public string Name { get; set; }
    public string AddressLine { get; set; }
    public string City { get; set; }
    public string PostalCode { get; set; }
    public string CountryCode { get; set; }
    public string Phone { get; set; }
  }

---

好吧，假设

FormsPersistence

具有保存该属性的属性，您可以执行以下操作：

  return from address in doc.Descendants(ns + "Order")
         let shipping=address.Element(ns+"ShippingAddress")
         select new FormsPersistence
           {
               AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
               PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
               BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
               BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
               OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
               ShippingAddress= new ShippingAddress{Name=(string)shipping.Element(ns+"Name"),
                                                    AddressLine=(string)shipping.Element(ns+"AddressLine1"),
                                                   }
           };

---

您需要使用

Element

方法，该方法允许您获取当前节点的内部元素，并且在

let

子句的帮助下，您可以保存结果以便稍后在投影中使用，正如我在上面的代码中所示。

诀窍是使用Elements，然后使用FirstOrDefault（）

---

但是要在结果中放置发货地址的地方，是

FormsPersistence

的属性吗？是的，我在FormsPersistence中设置了它们，例如公共字符串名称{get；set；}我得到的类型或命名空间名称“ShippingAddress”找不到（您是否缺少using指令或程序集引用？）在VS on new ShippingAddress中突出显示是的，我假设您的模型中有一个具有该名称的属性（这是一个自定义类），如果您没有该属性，您可以创建它或添加属性以将装运信息直接保存在您的

FormPersistence

类对不起，我的基本知识正在学习中。我添加了一个新的类ShippingAddress，其中我添加了名称和地址行。我现在无法将类型'AmazonMWS.src.MarketplaceWebServiceOrders.ShippingAddress'隐式转换为'string'，您需要用于shipping的命名空间：

let shipping=address.Element（ns+“ShippingAddress”）

查看查询，我正在创建

ShippingAddress

的新实例：

new ShippingAddress{}

，我没有直接执行

ShippingAddress=（字符串）shipping.Element（…）

class ShippingAddress
{
    public string Name { get; set; }
    public string AddressLine { get; set; }
    public string City { get; set; }
    public string PostalCode { get; set; }
    public string CountryCode { get; set; }
    public string Phone { get; set; }
  }

  return from address in doc.Descendants(ns + "Order")
         let shipping=address.Element(ns+"ShippingAddress")
         select new FormsPersistence
           {
               AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
               PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
               BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
               BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
               OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
               ShippingAddress= new ShippingAddress{Name=(string)shipping.Element(ns+"Name"),
                                                    AddressLine=(string)shipping.Element(ns+"AddressLine1"),
                                                   }
           };

return doc.Descendants(ns + "Order").Select(address => new FormsPersistence()
               {
                   AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
                   PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
                   BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
                   BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
                   OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
                   ShippingAddress = address.Elements(ns + "ShippingAddress").Select(shipping => new {
                        name = (string)shipping.Element(ns + "Name")
                   }).FirstOrDefault() 
               }).ToList();