using System;

using System.Text.Json;

​

public class Example

{

    private class Product

    {

        public string Name { get; set; }

        public DateTime? ExpiryDate { get; set; }

    }

​

    public static void Main(string[] args)

    {

        string json = @"{""Name"":""Banana"",""ExpiryDate"":""2022-12-09T02:15:37.4587204Z""}";

        Product p = JsonSerializer.Deserialize<Product>(json);

        Console.WriteLine(p.Name);

        Console.WriteLine(p.ExpiryDate);

        string json1 = @"{""Name"":""Bad banana"",""ExpiryDate"":""2022-12-09T02:15:37.4587204Z""}";

        Product p1 = JsonSerializer.Deserialize<Product>(json1);

        Console.WriteLine(p1.Name);

        Console.WriteLine(p1.ExpiryDate);

    }

}

​