C# JSON

1、C# 获取json中某key对应的值，支持迭代

/// <summary>
/// 从json中获取对应key的value值
/// </summary>
/// <param name="json字符串"></param>
/// <param name="需要取value对应的key"></param>
/// <returns></returns>
public string GetJsonValue(string strJson , string key) 
{
    //测试：
    //strJson = @"{'1':{'id':{'ip':'192.168.0.1','p':34,'pass':'ff','port':80,'user':'t'}},'code':0}";
    //key = "user"
    string strResult="";
    JObject jsonObj = JObject.Parse(strJson);
    strResult = GetNestJsonValue(jsonObj.Children(), key);
    return strResult;
}
/// <summary>
/// 迭代获取eky对应的值
/// </summary>
/// <param name="jToken"></param>
/// <param name="key"></param>
/// <returns></returns>
public string GetNestJsonValue(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 GetNestJsonValue(jc.Children(), key);
        } else 
        {
            if (((JProperty)jc).Name == key) 
            {
                return ((JProperty)jc).Value.ToString();
            }
        }
    }
    return null;
}