A data value takes JSON

    /// <summary>
    /// 把json数据转换成键值对
    /// </summary>
    /// <param name="JSON"></param>
    /// <returns></returns>
    public Dictionary<string, object> JsonDic(string JSON)
    {
        JavaScriptSerializer serializer = new JavaScriptSerializer();
        Dictionary<string, object> json = (Dictionary<string, object>)serializer.DeserializeObject(JSON);
        return json;
    }

public string JsonValueInDate()
    {
        Dictionary<string, object> json;
        string JSON = "{'name':'张三','sex':'女','data':[{'title':'这是标题','remark':'这是备注'}]}";
        json = JsonDic(JSON);

        string key = "data";
        if (key == "data")
        {
            object data;
            if (json.TryGetValue("data", out data))
            {
                object[] datas = (object[])data;
                for (int i = 0; i < datas.Length; i++)
                {
                    json = (Dictionary<string, object>)datas[i];                    
                }

                object title;
                if (json.TryGetValue("title", out title))
                {
                    return title.ToString();
                }
            }
        }
        else
        {
            object name;
            if (json.TryGetValue("name", out name))
            {
                return name.ToString();
            }
        }

        return "";
    }