How to convert JSON to C# class?

Question

JSON

There is no way I can convert this json data into a class. No matter how much I try, there are always errors.

I can't change this Json, I get the data via api

JSON

{
"blabla": {
    "columns": ["id", "num", "date", "time", "ti", "val"], 
    "data": [
        [30, 45, "2021-05-30", "14:34:34", "FUКЕ", "OLGD"],
        [60, 45, "2020-02-30", "02:21:06", "BEВП", "GASF"]
    ]
}}

C#
I made this code in an online generator and tried to convert it in every possible way, but all to no avail

public class Blabla
{
        public List <string> columns { get; set; }
        public List <List <int>> data { get; set; }
}

public class Root
{
        public Blabla blabla { get; set; }
}

I tried JsonConvert.DeserializeObject, I also tried to convert to JObject and JArray, but I don't understand what's wrong.

Answer 1

As I understand it, the most important gap in the data array.
If you use System.Text.Json, then it can be typed like this:

[JsonPropertyName("data")]
public JsonElement[][] Data {get; init;}

Well, do not forget to use your head when working with code generators.
You can also go head over heels and write a custom converter for this thing into some DataFrame or DataTable (I don’t remember exactly what this new class for plates is called)