C#反序列化实体类,json多嵌套如何遍历一层层获取列表指定...

Class1类
public class Root1
{
    public List<List<object>> n { get; set; }   //已转换的Json实体类
}




引用:
using System.IO;
using System.Net;
using Newtonsoft.Json;



private void button2_Click(object sender, EventArgs e)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(@"https://phoile.tender88.com/sports-service/sv/odds/events?mk=1&sp=29&ot=2&btg=1&o=1&lg=&ev=&d=&l=100&v=0&me=0&more=false&c=CN&tm=0&g=QQ%3D%3D&pa=0&cl=100&_g=1&pimo=0%2C1%2C8%2C3%2C6%2C7%2C4%2C5&inl=false&_=1671623147061&locale=zh_CN"));
            request.Method = "GET";  //请求的方法
            request.Accept = "application/json, text/javascript, */*; q=0.01"; //可以接受哪些类型的文件
            request.Headers.Add("Accept-Language", "zh-CN,zh;q=0.9"); //头部信息添加语言
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36"; //访问验证
            request.ContentType = "application/json;charset=UTF-8"; //识别编码格式UTF-8
            HttpWebResponse response = (HttpWebResponse)request.GetResponse(); //响应,强制转换
            Stream myResponseStream = response.GetResponseStream();   //获取流,需要引用命名空间IO
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);  //流读取器,观察者模式


            string getJson = myStreamReader.ReadToEnd();
            listView2.Items.Clear();
            Root1 rt1 = JsonConvert.DeserializeObject<Root1>(getJson);

             StringBuilder sb1 = new StringBuilder();
            foreach (object item in rt1.n)   //遍历第一层?
            {
                if (item is List<object> innerList)
                {
                    foreach (object innerItem in innerList)    //遍历第二层?
                    {
                        if (innerItem is List<object> nestedList)
                        {
                            object thirdValue = nestedList[0];    //获取指定的值,为何提示"没有"?
                            sb1.Append(thirdValue.ToString());                         
                        }
                        else
                        {
                            sb1.Append("没有");
                        }
                        sb1.Append(Environment.NewLine);
                    }

                }
            }
            textBox1.Text = sb1.ToString();
           myStreamReader.Close();     //关闭
            myStreamReader.Dispose();   //释放
            myResponseStream.Close();   //关闭流
            myResponseStream.Dispose(); //释放流
        }
    }
    }