How to assign LIST class models Nested in Web API 2.0

Question

I need help, to Assign List Nested Web Api 2.0:

public HttpResponseMessage Post([FromBody] ZHitung1m respon1)

So far my code only can Assign First Class Model

I can assign and call = respon1.DistCode
but somehow I cannot assign and call = respon1.ProductCode

Here my Models class WEB Api :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;


namespace WebAPI.Models
{
    public class ZHitung1m
    {
        public string DistCode { get; set; }
        
        public List<ZHitung2m> Row { get; set; }

        public class ZHitung2m
        {
            public string ProductCode { get; set; }
        }

    }
}

Here is my API Controller use HttpResponseMessage Post =

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using WebAPI.Models;

namespace WebAPI.Controllers
{
    public class Zhitung1Controller : ApiController
    {

        [HttpPost]
        public HttpResponseMessage Post([FromBody] ZHitung1m respon1)
        {

            var variable1 = respon1.DistCode;

            if (variable1 == "anton")
            {
                respon1.DistCode = "budiman";
            }

            return Request.CreateResponse(HttpStatusCode.OK, respon1);

        }
        }
}

So far I just can only assign (respon1.DistCode)
How to call and assign (respon1.ProductCode)?

Without changing nested structure in my POSTMAN, here my postman Result:

1. Anyone know to call and assign (respon1.ProductCode)? So far I try

public class ZHitung2m : ZHitung1m
{
    public string ProductCode { get; set; }
}

Its change and broke postman structure that I want.

2.

 public class ZHitung1m : ZHitung2m
 {
     public string DistCode { get; set; }
     
     public List<ZHitung2m> Row { get; set; }

 }
 public class ZHitung2m
 {
     public string ProductCode { get; set; }
 }

Use this class models code, can call assign (respon1.ProductCode) but also change and broke postman structure that I want:

Answer 1

Making your models inherit from each other doesn't seem like what you want to do at all, as they are representing different concepts, i.e. ZHitung1m contains a list of ZHitung2m, if you're inheriting one from the other you're saying ZHitung1m is a type of ZHitung2m or vice versa.

So no inheritance needed... then try something along these lines (changing variable names to something descriptive):

namespace WebAPI.Controllers
{
    public class Zhitung1Controller : ApiController
    {

        [HttpPost]
        public HttpResponseMessage Post([FromBody] ZHitung1m respon1)
        {

            var variable1 = respon1.DistCode;

            if (variable1 == "anton")
            {
                respon1.DistCode = "budiman";
            }

            foreach(var row in respon1.Row)
            {
                var variable2 = row.ProductCode;

                ... do something with variable2 or row here ...
            }

            return Request.CreateResponse(HttpStatusCode.OK, respon1);

        }
    }
}