C#中JSON字符串和Dictionary字典类型的相互转换

在开发过程中，往往会遇到数据类型转换的情况，根据自己的业务，可能转换类型有多种，下面就说一下json字符串和字典类型的转换。

public static class JsonUntity
    {
        /// <summary>
        /// 将字典类型序列化为json字符串
        /// </summary>
        /// <typeparam name="TKey">字典key</typeparam>
        /// <typeparam name="TValue">字典value</typeparam>
        /// <param name="dict">要序列化的字典数据</param>
        /// <returns>json字符串</returns>
        public static string SerializeDictionaryToJsonString<TKey, TValue>(Dictionary<TKey, TValue> dict)
        {
            if (dict.Count == 0)
                return "";

            string jsonStr = JsonConvert.SerializeObject(dict);
            return jsonStr;
        }

        /// <summary>
        /// 将json字符串反序列化为字典类型
        /// </summary>
        /// <typeparam name="TKey">字典key</typeparam>
        /// <typeparam name="TValue">字典value</typeparam>
        /// <param name="jsonStr">json字符串</param>
        /// <returns>字典数据</returns>
        public static Dictionary<TKey, TValue> DeserializeStringToDictionary<TKey, TValue>(string jsonStr)
        {
            if (string.IsNullOrEmpty(jsonStr))
                return new Dictionary<TKey, TValue>();

            Dictionary<TKey, TValue> jsonDict = JsonConvert.DeserializeObject<Dictionary<TKey, TValue>>(jsonStr);

            return jsonDict;

        }
    }

List集合序列化可使用：

        /// <summary>
        /// JSON序列化
        /// </summary>
        public string JsonSerializer<T>(T t)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream();
            ser.WriteObject(ms, t);
            string jsonString = Encoding.UTF8.GetString(ms.ToArray());
            ms.Close();
            return jsonString;
        }

C#：Json数据反序列化为Dictionary并根据关键字获取指定的值
Json数据：

{
  "dataSet": {
    "header": {
      "returnCode": "0", 
      "errorInfo": "HTTP请求错误", 
      "version": "V1.0R010", 
      "totalRows": "2000", 
      "returnRows": "20"
    }, 
    "fieldDefine": {
      "assetId": "string", 
      "serverIdcId": "int", 
      "inputTime": "datetime"
    }, 
    "data": {
      "row": [
        {
          "AssetId": "TCNS2006888", 
          "ServerIdcId": "1", 
          "InputTime": "2008-12-12"
        }, 
        {
          "AssetId": "TCNS2006889", 
          "ServerIdcId": "2", 
          "InputTime": "2008-1-1"
        }
      ]
    }
  }
}

问题：如何获取header中的数据行,以便显示在界面上?
效果图：

将json数据转成dictionary的代码：

/// <summary>
/// 将json数据反序列化为Dictionary
/// </summary>
/// <param name="jsonData">json数据</param>
/// <returns></returns>
private Dictionary<string, object> JsonToDictionary(string jsonData)
{
    //实例化JavaScriptSerializer类的新实例
    JavaScriptSerializer jss = new JavaScriptSerializer();
    try
    {
        //将指定的 JSON 字符串转换为 Dictionary<string, object> 类型的对象
        return jss.Deserialize<Dictionary<string, object>>(jsonData);
    }
    catch (Exception ex)
    {
        throw new Exception(ex.Message);
    }
}

使用方法：

private void button1_Click(object sender, EventArgs e)
{
    //Json数据
    string json = "{\"dataSet\":{\"header\":{\"returnCode\":\"0\",\"errorInfo\":\"HTTP请求错误\",\"version\":\"V1.0R010\",\"totalRows\":\"2000\",\"returnRows\":\"20\"},\"fieldDefine\":{\"assetId\":\"string\",\"serverIdcId\":\"int\",\"inputTime\":\"datetime\"},\"data\":{\"row\":[{\"AssetId\":\"TCNS2006888\",\"ServerIdcId\":\"1\",\"InputTime\":\"2008-12-12\"},{\"AssetId\":\"TCNS2006889\",\"ServerIdcId\":\"2\",\"InputTime\":\"2008-1-1\"}]}}}";
    Dictionary<string, object> dic = JsonToDictionary(json);//将Json数据转成dictionary格式
    Dictionary<string, object> dataSet=(Dictionary<string, object>)dic["dataSet"];
    //使用KeyValuePair遍历数据
    foreach (KeyValuePair<string, object> item in dataSet)
    {
        if (item.Key.ToString() == "header")//获取header数据
        {
            var subItem=(Dictionary<string,object>)item.Value;
            foreach (var str in subItem)
            {
                textBox1.AppendText(str.Key + ":" + str.Value+"\r\n");//显示到界面
            }
            break;
        }
    }
}