Hi all,

I am trying to work on API service for our ERP system Invenotry function, need make use of nested Json structure to pass values:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Newtonsoft.Json;

namespace NDYAPI
{
    public class StockAdj
    {
        public string doc_format = "YYMM";
        public string coy_code;
        public string doc_type;
        public string status_code = "P";
        public string requester_code;
        public string requester_name;
        public DateTime requested_date;
        public string invoice_code = "";
        public int doi_num = 0;
        public string remarks;
        public string reason_code;
        public int item_count; 
        public StockAdjitem[] adjitems;        
        
    }
    public class StockAdjitem
    {
        public int item_num;
        public string trans_type;
        public string prod_code;
        public string prod_to;
        public string part_code;
        public string part_to;

    }

}

While incurring "Exception Thrown" with "System.NullReferenceException: Object reference not set to an instance of an object." when setting the value to nested sub items.

am i missed something with the class defination ?

Thank you.

Zhang