using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        var args = new Args("Narshe", "127.0.0.1", 1, 2);

        Console.WriteLine(args.Name);

        Console.WriteLine(args.Hostname);

        Console.WriteLine(args.Lang);

        Console.WriteLine(args.Region);

        var hostnameby = Encoding.ASCII.GetBytes(args.Hostname);

            Array.Resize(ref hostnameby, 0x14);

        foreach (var b in hostnameby)

            Console.Write(b.ToString("X2"));

    }

}

​

public class Args

{

    public enum LANG : int

    {

        JAJP = 0,

        ENUS = 1,

        ENGB = 1,

        DEDE = 2,

        FRFR = 3

    }

    public Args(string name, string hostname, int lang, int region)

    {

        Name = name;

        Hostname = hostname;

        Hostnameby = null;

        Lang = lang;

        Region = region;

    }

    public Args()

    {

        Name = null;

        Hostname = null;

        Hostnameby = null;

        Lang = -1;

        Region = 0;

    }

    private string _name;

    private string _hostname;

    private byte[] _hostnameby;

    private int _lang;

    private int _region;

    public string Name

    {

        get

        {

            return _name;   

        }

        set

        {

            _name = !string.IsNullOrEmpty(value) ? value : "Default";

        }

    }

    public string Hostname

    {

        get

        {

            return _hostname;   

        }

        set

        {

            _hostname = !string.IsNullOrEmpty(value) && value.Length <= 0x14 ? value : "localhost";

        }

    }

    public byte[] Hostnameby

    {

        get

        {

            return _hostnameby; 

        }

        set

        {

            var hostnameby = Encoding.ASCII.GetBytes(this.Hostname);

            Array.Resize(ref hostnameby, 0x14);

            _hostnameby = hostnameby;           

        }

    }

    public int Lang

    {

        get

        {

            return _lang;

        }

        set

        {

            _lang = value >= (int)LANG.JAJP && value <= (int)LANG.FRFR ? value : (int)LANG.JAJP;

        }

    }

    public int Region

    {

        get

        {

            return _region;

        }

        set

        {

            _region = value >= 1 && value <= 3 ? value : 1;

        }

    }

}