using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

//https://stackoverflow.com/questions/54207670/newtonsoft-populateobject-value-cannot-be-null-exception#54207670

​

​

public class MyResponse 

{

   public string ExceptionJSONString 

   {

       get; set;

   }

}

​

class TestClass

    {

        public static MyResponse ExceptionTest()

        {

            MyResponse response = new MyResponse();

            try

            {

                int x = 0;

                int res = 25 / x;

            }

            catch(Exception ex) 

            {

                response.ExceptionJSONString = Newtonsoft.Json.JsonConvert.SerializeObject(ex);

            }

            return response;

        }

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine();

​

            try

            {

                MyResponse response = TestClass.ExceptionTest();

                Exception ex1 = new Exception();

                Console.WriteLine("Got result back now deserialze");

                Console.WriteLine(response.ExceptionJSONString);

                Newtonsoft.Json.JsonConvert.PopulateObject(response.ExceptionJSONString, ex1);

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​