using System.Collections;
using System.Collections.Generic;
using System.Runtime.Serialization.Formatters;
using System.ComponentModel.DataAnnotations;
using System.Globalization;
using System.Collections.ObjectModel;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Serialization;
public string KeyA {get;set;}
public class ClassB : ClassA
public string KeyB {get;set;}
public static void Test()
var json = "{\"keyB\":\"sampleKey\"}";
var classB = JsonConvert.DeserializeObject<ClassB>(json);
Assert.AreEqual("sampleKey", classB.KeyB);
Assert.AreEqual(null, classB.KeyA);
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("Failed with unhandled exception: ");
public static string GetNetCoreVersion()
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];