using System;

using System.Text.Json;

​

public class Program

{

    public static void Main()

    {

        var result = JsonSerializer.Deserialize<Dto>(@"{ ""Name"": [] }");

        Console.WriteLine("Result: {0}", result.Name.Length);

    }

}

​

public class Dto {

    private string[] _name { get; set; }

​

    public string[] Name

    {

        get { return _name ??= Array.Empty<string>(); }

        // { return _name; }

        set { _name = value; }

    }       

}