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 Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using System.Management.Automation;

​

//https://stackoverflow.com/questions/52129810/how-can-i-serialise-psobjects-in-c-sharp-with-json-net

​

    public class PSObjectJsonConverter : JsonConverter

    {

        public override bool CanConvert(Type objectType)

        {

            return typeof(PSObject).IsAssignableFrom(objectType);

        }

​

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)

        {

            var psObj = (PSObject)value;

            writer.WriteStartObject();

            var resolver = serializer.ContractResolver as DefaultContractResolver;

            var strategy = (resolver == null ? null : resolver.NamingStrategy) ?? new DefaultNamingStrategy();

​

            foreach (var prop in psObj.Properties)

            {

                //Probably we shouldn't try to serialize a property that can't be read.

                //https://docs.microsoft.com/en-us/dotnet/api/system.management.automation.pspropertyinfo.isgettable?view=powershellsdk-1.1.0#System_Management_Automation_PSPropertyInfo_IsGettable

                if (!prop.IsGettable)

                    continue;

                writer.WritePropertyName(strategy.GetPropertyName(prop.Name, false));

                serializer.Serialize(writer, prop.Value);

            }

            writer.WriteEndObject();

        }

​

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)

        {

            throw new NotImplementedException();

        }

​

        public override bool CanRead { get { return false; } }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var obj = new PSObject();

            var settings = new JsonSerializerSettings

            {

                Converters = { new PSObjectJsonConverter() },

                // Failed attempt to work around weird security exception on dotnetfiddle

                ContractResolver = new TestContractResolver(),

            };

            var json = JsonConvert.SerializeObject(obj, Formatting.Indented, settings);

            Console.WriteLine(json);

        }

    }

​

    public class TestContractResolver : DefaultContractResolver

    {

        protected override  JsonContract CreateContract(Type objectType)

        {

            Console.WriteLine("Called for {0}", objectType);

            if (typeof(PSObject).IsAssignableFrom(objectType))

            {

                return CreateObjectContract(objectType);

            }

            return base.CreateContract(objectType);

        }

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

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

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​

    public class AssertionFailedException : System.Exception

    {

        public AssertionFailedException() : base() { }

​

        public AssertionFailedException(string s) : base(s) { }

    }

​

    public static class Assert

    {

        public static void IsTrue(bool value)

        {

            IsTrue(value, "failed");

        }

​

        public static void IsTrue(bool value, string message)

        {

            if (value == false)

                throw new AssertionFailedException(message ?? "failed");

        }

    }

​