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 System.Collections.ObjectModel;

​

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/63066921/json-deserialization-handle

​

    public class ArrayItemFilteringListConverter : JsonConverter

    {

        static readonly IContractResolver defaultResolver = JsonSerializer.CreateDefault().ContractResolver;

        readonly IContractResolver resolver;

​

        public ArrayItemFilteringListConverter() : this(null) { }

​

        public ArrayItemFilteringListConverter(IContractResolver resolver) => this.resolver = resolver ?? defaultResolver;

​

        public override bool CanConvert(Type objectType) => CanConvert(resolver, objectType, out _);

        static bool CanConvert(IContractResolver resolver, Type objectType, out Type itemType)

        {

            if (objectType.IsArray || objectType.IsPrimitive || objectType == typeof(string) || !typeof(IList).IsAssignableFrom(objectType))

            {

                itemType = null;

                return false;

            }

            itemType = objectType.GetListItemType();

            if (itemType == null)

                return false;

            if (resolver.ResolveContract(itemType) is JsonArrayContract)

                return false;

            return true;

        }

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

        {

            if (!CanConvert(serializer.ContractResolver, objectType, out var itemType))

                throw new JsonException(string.Format("Invalid collection type {0}", objectType));

            var contract = serializer.ContractResolver.ResolveContract(objectType);

​

            if (reader.MoveToContentAndAssert().TokenType == JsonToken.Null)

                return null;

            else if (reader.TokenType != JsonToken.StartArray)

                throw new JsonSerializationException(string.Format("Invalid start token {0}", reader.TokenType));

            var list = existingValue as IList ?? (IList)contract.DefaultCreator();

            while (reader.Read())

            {

                switch (reader.TokenType)

                {

                    case JsonToken.EndArray:

                        return list;

                    case JsonToken.StartArray:

                    case JsonToken.Comment:

                        reader.Skip();

                        break;

                    default:

                        // Here we take advantage of the fact that List<T> implements the non-generic IList interface.

                        list.Add(serializer.Deserialize(reader, itemType));

                        break;

                }

            }

            // Should not come here.

            throw new JsonSerializationException("Unclosed array at path: " + reader.Path);     

        }   

​

        public override bool CanWrite => false;

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new NotImplementedException();

    }

    public static partial class JsonExtensions

    {

        public static JsonReader MoveToContentAndAssert(this JsonReader reader)

        {

            if (reader == null)

                throw new ArgumentNullException();

            if (reader.TokenType == JsonToken.None)       // Skip past beginning of stream.

                reader.ReadAndAssert();

            while (reader.TokenType == JsonToken.Comment) // Skip past comments.

                reader.ReadAndAssert();

            return reader;

        }

​

        public static JsonReader ReadAndAssert(this JsonReader reader)

        {

            if (reader == null)

                throw new ArgumentNullException();

            if (!reader.Read())

                throw new JsonReaderException("Unexpected end of JSON stream.");

            return reader;

        }

        public static Type GetListItemType(this Type type)

        {

            while (type != null)

            {

                if (type.IsGenericType)

                {

                    var genType = type.GetGenericTypeDefinition();

                    if (genType == typeof(List<>))

                        return type.GetGenericArguments()[0];

                }

                type = type.BaseType;

            }

            return null;

        }

    }

​

// Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse); 

    public class PropertyValue    

    {

        public string value1 { get; set; } 

        public string value2 { get; set; } 

        public string value3 { get; set; } 

    }

​

    public class Root    

    {

        [JsonConverter(typeof(ArrayItemFilteringListConverter))]

        public List<PropertyValue> propertyName { get; } = new List<PropertyValue>(); 

    }

​

    class TestClass

    {

        public static void Test()

        {

            foreach (var json in GetJson())

            {

                Console.WriteLine("\nDeserializing JSON:");

                Console.WriteLine(json);

                var root = JsonConvert.DeserializeObject<Root>(json);

                var json2 = JsonConvert.SerializeObject(root, Formatting.Indented);

                Console.WriteLine("Re-serialized {0}", root);

                Console.WriteLine(json2);

            }

        }   

        static IEnumerable<string> GetJson()

        {

            return new [] {

                @"{""propertyName"": [

   {

      ""value1"": ""value"",

      ""value2"": ""value"",

      ""value3"": ""value"" 

   }

]

}",

                @"{""propertyName"": [

     [] 

]

}",

                @"{""propertyName"": /* Comment */ [ /* COmment */

   {

      ""value1"": ""value"",

      ""value2"": ""value"",

      ""value3"": ""value"" 

   },

   /* Comment */ {} /* COmment */, /* Comment */ null /* Comment */,

   /* Comment */ [],   

   {

      ""value1"": ""value"",

      ""value2"": ""value"",

      ""value3"": ""value"" 

   }

]

}"

            };

        }

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetCoreVersion());

            Console.WriteLine("{0} version: {1}", typeof(JsonSerializer).Assembly.GetName().Name,  typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

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

                Console.WriteLine(ex);

                throw;

            }

        }

        public static string GetNetCoreVersion()

        {

            //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

            //

            var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

            var assemblyPath = assembly.CodeBase.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

            int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

            if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

                return assemblyPath[netCoreAppIndex + 1];

            return null;

        }

    }

​