多層ネストJsonデータの抽出

 .net 2.0      json
{"name":"lily","age":23,"addr":{"city":guangzhou,"province":guangdong}}
      
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
      JSON      .          
public class UserInfo
{
public string name;
public int age;
public address addr;
}
public class address
{
public string city;
public string province;
}
           :
string jsonData="{\"name\":\"lily\",\"age\":23,\"addr\":{\"city\":guangzhou,\"province\":guangdong}}";
UserInfo user=(UserInfo)JsonConvert.DeserializeObject(jsonData, typeof(UserInfo));
  City    :user.addr.City;
      
JObject jsonObj = JObject.Parse(jsonData);
string name=jsonObj ["name"].ToString();
string age=jsonObj ["age"].ToString();
string city=((JObject )jsonObj ["addr"])["city"].ToString();
string province=((JObject )jsonObj ["addr"])["province"].ToString();
    json     ？        json， {"name":"lily","age":23,"addr":{"city":guangzhou,"province":guangdong}}；           ， city，       guangzhou   ，     ，json        ，            json   。（  ，json      。）
    
public string GetJsonValue(JEnumerable<JToken> jToken,string key)
{
IEnumerator enumerator = jToken.GetEnumerator();
while (enumerator.MoveNext())
{
JToken jc = (JToken)enumerator.Current;

if (jc is JObject||((JProperty)jc).Value is JObject)
{
return GetJsonValue(jc.Children(), key);
}
else
{
if (((JProperty)jc).Name == key)
{
return ((JProperty)jc).Value.ToString();
}
}
}
return null;
}
      :
string jsonData = "{\"name\":\"lily\",\"age\":23,\"addr\":{\"city\":\"guangzhou\",\"province\":\"guangdong\"}}";
JObject jsonObj = JObject.Parse(jsonData);
Response.Write(GetJsonValue(jsonObj.Children(), "province"));
          
string  jsonData = "{\"addr\":[{\"city\":\"guangzhou\",\"province\":\"guangdong\"},{\"city\":\"guiyang\",\"province\":\"guizhou\"}]}";
JObject  jsonObj = JObject.Parse(jsonData);
JArray  jar = JArray.Parse(jsonObj["addr"].ToString());
JObject  j = JObject.Parse(jar[0].ToString());
Response.Write(j["city"]);
JSON XML
string xmlstr=((XmlDocument)JsonConvert.DeserializeXmlNode(jsonData)).InnerXml.ToString();