using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;

using System.Threading;

using System.Collections.ObjectModel;

using System.Reflection;

using System.ComponentModel;

using System.Globalization;

using System.Collections.Specialized;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;

​

    public class AmountModel

    {

        public string Amounts;

    }

​

    public class Repository 

    {

        public string Amounts { get; set; }

    }

​

    public class TestClass

    {

        private JArray _JArray = null;

        private JArray NArray(Repository repository)

        {

            _JArray = new JArray();

            string[] amounts = repository.Amounts.Split('|');

            for (int i = 0; i < amounts.Length; i++)

            {

                _JArray.Add(JToken.FromObject(

                    new AmountModel

                    {

                        Amounts = amounts[i],

                    }));

            }

            return _JArray;

        }

        public void Test()

        {

            var repository = new Repository

            {

                Amounts = "1|2|3.14",

            };

            _JArray = NArray(repository);

            Console.WriteLine(JsonConvert.SerializeObject(_JArray));

        }

    }

    public class Program

    {

        public static void Main()

        {

            new TestClass().Test();

        }

    }

​