using System;

using System.Text.Json;

using System.Text.Json.Nodes;

​

public class Program

{

    public static void Main()

    {

        var jsonObj = JsonSerializer.Deserialize<JsonObject>("{\"Name\":\"Fred\",\"Age\":10,\"RemoveMe\":\"???\"}");

        //Console.WriteLine(element.GetProperty("Name").ToString());

        //Console.WriteLine(element.GetProperty("Age").ToString());

        //Console.WriteLine(element.GetProperty("RemoveMe").ToString());

        jsonObj.Remove("RemoveMe");

        // element.Remove("RemoveMe");

        // string output = element.ToString();

        Console.WriteLine(jsonObj);

    }

}