https://stackoverflow.com/questions/66495660/net-5-0-signature-change-of-system-text-json-jsonserializer-deserialize

CSharp · Console

/Program.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

using System.Text.Json;
using System.Text.Json.Serialization;

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

//https://stackoverflow.com/questions/66495660/net-5-0-signature-change-of-system-text-json-jsonserializer-deserialize

	class ClassA
	{
		public string[] ArrayOfString { get; set; }
	}

	class ClassB : BaseClass
	{
		public string[] ArrayOfString
		{
			get => new string[] { base.SingularString };
			set
			{
				if((value != null) && (value.Length == 1))
				{
					base.SingularString = value[0];
				}
			}
		}
	}
	class BaseClass
	{
		public string SingularString { get; set; } = "Hello World";
	}	

    class TestClass
    {
        public static void Test()
        {
			var classA = new ClassA { ArrayOfString  = new [] { "Hello World" } };
			
			var json = JsonSerializer.Serialize(classA);
			
			Console.WriteLine(json);
			
			var classA2 = JsonSerializer.Deserialize<ClassA>(json);
			
			classA2.Dump();
			
			var classB = JsonSerializer.Deserialize<ClassB>(json);
			
			classB.Dump();
			
			Assert.That(classA.ArrayOfString.SequenceEqual(classB.ArrayOfString));
		}	
	}

	public class Program
	{
		public static void Main()
		{
			Console.WriteLine("Environment version: {0} ({1}), {2}", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , Environment.Version, Environment.OSVersion);
			Console.WriteLine("System.Text.Json version: " + typeof(JsonSerializer).Assembly.FullName);
			Console.WriteLine();

			try
			{
				TestClass.Test();
			}
			catch (Exception ex)
			{
				Console.WriteLine("Failed with unhandled exception: ");
				Console.WriteLine(ex);
				throw;
			}
		}
	}