using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Converters;

public class Program

{

    public static void Main()

    {

        var orginalBarcode  = "012345678901";

        var newBarcode      = orginalBarcode.Substring(1 ,orginalBarcode.Length - 2); 

        var code            = newBarcode.Substring(0, 5); 

        var quantity        = newBarcode.Substring(5, 5);

        Console.WriteLine("Orginal Barcode  >> " + orginalBarcode);

        Console.WriteLine("NewBarcode       >> " + newBarcode);

        Console.WriteLine("Code             >> " + code);

        Console.WriteLine("Quantity         >> " + quantity);

    }

    public class User

    {

        public string Name { get; set; }

        [JsonConverter(typeof(CustomDateConverter))]

        public DateTime BirthDay { get; set; }

    }

    public class CustomDateConverter : IsoDateTimeConverter

    {

        public CustomDateConverter()

        {

            DateTimeFormat = "yyyyMMdd";

        }

    }

}