using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Text.Json;

using System.Text.Json.Serialization;

​

public class Program

{

    public static void Main()

    {

        const string JsonString = @"

            {

                ""item"": [

                  {

                    ""serialNo"": ""000000000002200878"",

                    ""affiliationOrgCode"": ""OrgCode1""

                  },

                  {

                    ""serialNo"": ""000000000002201675"",

                    ""affiliationOrgCode"": ""OrgCode1""

                  }

                ]

            }

        ";

        var options = new JsonSerializerOptions(JsonSerializerDefaults.Web);

        var deserializedClass = JsonSerializer.Deserialize<Root>(JsonString, options);

​

        Debug.Assert(deserializedClass != null);

        Debug.Assert("2201675".Equals(deserializedClass.Item[1].SerialNo.Value));

    }

}

​

public class SerialNo

{

    [JsonConstructor]

    public SerialNo(string serialNo)

    {

        if (serialNo == null) throw new ArgumentNullException(nameof(serialNo));

​

        if (string.IsNullOrWhiteSpace(serialNo)) throw new Exception("My exception text");

​

        Value = serialNo.Trim('0');

    }

​

    public string Value { get; set; }

}

​

public class Item

{

    public SerialNo SerialNo { get; set; }

​

    public string AffiliationOrgCode { get; set; }

}

​

public class Root

{

    public List<Item> Item { get; set; }

}