using System;

using System.Linq;

​

using Newtonsoft.Json;

public class Program

{

    public class Something {

        public string[] Names;

    }

    public static void Main()

    {

        var x = new Something { Names = new[] { "Gary", "Klama" } };

        var y = new Something { Names = null };

        var z = new Something { Names = new string[] { } };

        f(x);

        f(y);

        f(z);

    }

    public static void f(Something s) =>

        Console.WriteLine(JsonConvert.SerializeObject(s.Names) + " assign? " + (s.Names == null || s.Names.Any() ? "yes" : "no") );

}