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我正在使用 Google Maps API 在 1.1 中进行 GeoCode 查找，并且遇到了 XPathNavigator 对象的障碍。

我需要创建一个“子导航器”，以便我们可以对节点执行全局 xpath 搜索（例如 //adr:PostalCodeNumber），因为 xml 架构会根据返回的地址的准确性而改变。

这是一个示例响应：

    <kml xmlns="http://earth.google.com/kml/2.0"><Response>
     <name>2601 S. McKenzie Street </name>
      <Status>
       <code>200</code>
       <request>geocode</request>
      </Status>
      <Placemark id="p1">
       <address>2601 S McKenzie St, Foley, AL 36535, USA</address>
       <AddressDetails Accuracy="8" xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0"><Country><CountryNameCode>US</CountryNameCode><CountryName>USA</CountryName><AdministrativeArea><AdministrativeAreaName>AL</AdministrativeAreaName><Locality><LocalityName>Foley</LocalityName><Thoroughfare><ThoroughfareName>2601 S McKenzie St</ThoroughfareName></Thoroughfare><PostalCode><PostalCodeNumber>36535</PostalCodeNumber></PostalCode></Locality></AdministrativeArea></Country></AddressDetails>
<ExtendedData>
  <LatLonBox north="30.3733653" south="30.3706673" east="-87.6817548" west="-87.6844528" />
</ExtendedData>
<Point><coordinates>-87.6831038,30.3720163,0</coordinates></Point>
</Placemark>
<Placemark id="p2">
  <address>2601 S McKenzie St, Gulf Shores, AL 36542, USA</address>
  <AddressDetails Accuracy="8" xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0">
   <Country>  <CountryNameCode>US</CountryNameCode><CountryName>USA</CountryName><AdministrativeArea><AdministrativeAreaName>AL</AdministrativeAreaName><Locality><LocalityName>Gulf Shores</LocalityName><Thoroughfare><ThoroughfareName>2601 S McKenzie St</ThoroughfareName></Thoroughfare><PostalCode><PostalCodeNumber>36542</PostalCodeNumber></PostalCode></Locality></AdministrativeArea></Country></AddressDetails>
  <ExtendedData>
    <LatLonBox north="30.3093758" south="30.3066778" east="-87.6818443" west="-87.6845423" />
  </ExtendedData>
  <Point><coordinates>-87.6832047,30.3080269,0</coordinates></Point>
  </Placemark>
    </Response></kml>

我有这个 2.0 代码块，我正在尝试为 OuterXml 属性找到 1.1 等效项：

private XPathNavigator CreateSubNavigator(XPathNavigator nav)
    {
        using (StringReader reader = new StringReader(nav.OuterXml))
        {
            XPathDocument doc = new XPathDocument(reader);
            return doc.CreateNavigator();
        }
    }

我找到了这篇博客文章，但是指向 SerializableXPathNavigator 源的链接已经失效。=(

http://www.tkachenko.com/blog/archives/000155.html

请原谅我的菜鸟，但我将如何使用自己的 OuterXml 方法编写自己的 SerializableXPathNavigator 类？

非常感谢你的帮助。

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