using System;

using System.Text.Json;

using System.Text.Json.Serialization;

​

public class POCO

{

    public POCO()

    {

    }

    [JsonPropertyName("name")]

    public string Name { get; set;}

    public static explicit operator POCO(string value) => new POCO();

​

}

​

public class Program

{

    public static void Main()

    {

        var resultPOCO = Content<POCO>("{\"name\":\"test\"}");

        Console.WriteLine(resultPOCO);

        var resultString = Content<string>("\"ok\"");

        Console.WriteLine(resultString);

        Console.WriteLine("NULLs");

        const string stringNullValue = null;

        var nullPOCO = Content<POCO>("");

        Console.WriteLine("POCO NULL = {0}", nullPOCO);

        Console.WriteLine("POCO NULL == {0}", nullPOCO == null);

        Console.WriteLine("POCO from NULL String, NULL == {0}", null == ((POCO)stringNullValue) );

        var nullString = Content<string>("");

        Console.WriteLine("string NULL = {0}", nullString);

        Console.WriteLine("string NULL == {0}", nullString == null);

    }

    public static T Content<T>(string value) where T: class

        {

            try

            {

                return JsonSerializer.Deserialize<T>(value);

            }

            catch (Exception e)

            {

                Console.WriteLine(e);

                return null;

            }

        }

}