C＃Linq创建XDoc复制分组信息

Question

我试图通过组合两个查询来创建XDocument。其中一个查询已分组。我遇到的问题是分组信息是复制和迭代集合。

群组查询：

var xlBaseInfo = (from asset in testing.Descendants("DellAsset")
                    select new
                    {
                        Product = (string)asset.Element("MachineDescription").Value,
                        OrderNumber = (string)asset.Element("OrderNumber").Value,
                        ServiceTag = (string)asset.Element("ServiceTag").Value,
                        ShipDate = (string)asset.Element("ShipDate").Value
                    }).ToList();

标准查询：

var groupByWarrany = xlWarranty.GroupBy(x => x.Service);
var newDocument = new XDocument(new XElement("Machine", xlBaseInfo.Select(z =>
    new XElement("Asset",
        new XElement("Product", z.Product),
        new XElement("OrderNumber", z.OrderNumber),
        new XElement("ServiceTag", z.ServiceTag),
        new XElement("ShipDate", z.ShipDate),
        //Duplicating information and not moving on to next starting here -- 
        new XElement("Warranties", groupByWarrany.Select(x =>
            new XElement("Warranty",
                new XElement("ServiceDescription", x.Key)
                )))))));

创建XDoc：

<Machine>
  <Asset>
    <Product>OPTI 3020,TIGRISSFFFBTX</Product>
    <OrderNumber>584290163</OrderNumber>
    <ServiceTag>1CZTF02</ServiceTag>
    <ShipDate>2014-03-21T00:00:00</ShipDate>
    <Warranties>
      <Warranty>
        <ServiceDescription>DirectLine Service</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Keep Your Hard Drive Service</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Next Business Day Support</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Silver Premium Support</ServiceDescription>
      </Warranty>
      <Warranty>
        **<ServiceDescription>Dell Labor Support</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>4 Hour On-Site Service</ServiceDescription>
      </Warranty>
    </Warranties>
  </Asset>
  <Asset>
    <Product>POWEREDGE R720XD, ORCA S PE</Product>
    <OrderNumber>339791846</OrderNumber>
    <ServiceTag>1VF0TW1</ServiceTag>
    <ShipDate>2013-03-20T00:00:00</ShipDate>
    <Warranties>
      <Warranty>
        <ServiceDescription>DirectLine Service</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Keep Your Hard Drive Service</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Next Business Day Support</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Silver Premium Support</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>Dell Labor Support</ServiceDescription>
      </Warranty>
      <Warranty>
        <ServiceDescription>4 Hour On-Site Service</ServiceDescription>
      </Warranty>
    </Warranties>

结果示例：

{{1}}

第二个资产节点不应包含这些保证。它没有遍历集合。