Console menu navigate with arrows

using System;
using System.Windows.Input;

namespace consoleMenuNavigate
{
    class Program
    {
        static string[] menu;
        static int index = 0;

        static void Main(string[] args)
        {
            Initialize();
            DrawMenu();

            while (true)
            {
                GetKeyboardState();
                DrawMenu();
            }
        }

        static void Initialize()
        {
            menu = new string[] { "1. menüpont", "2. menüpont", "3. menüpont", "4. menüpont", "5. menüpont" };
            // egyéb szükséges dolgok
        }

        static void GetKeyboardState()
        {
            ConsoleKeyInfo info = Console.ReadKey();
            if (info.Key == ConsoleKey.DownArrow)
            {
                if (index < menu.Length - 1)
                {
                    index++;
                }
            }
            if (info.Key == ConsoleKey.UpArrow)
            {
                if (index > 0)
                {
                    index--;
                }
            }
            if (info.Key == ConsoleKey.Enter)
            {
                enterMenu(index);
            }
        }

        static void DrawMenu()
        {
            Console.SetCursorPosition(0, 0);
            for (int i = 0; i < menu.Length; i++)
            {
                if (i == index)
                {
                    Console.BackgroundColor = ConsoleColor.Blue;
                    Console.WriteLine(menu[i]);
                }
                else
                {
                    Console.BackgroundColor = ConsoleColor.Black;
                    Console.WriteLine(menu[i]);
                }
            }
            Console.BackgroundColor = ConsoleColor.Black;
        }

        static void enterMenu(int index) // univerzalitás híján...
        {
            switch (index)
            {
                case 1:

                    break;

                case 2:

                    break;

                case 3:

                    break;

                case 4:

                    break;

                case 5:

                    break;

                default:

                    break;
            }
        }
    }
}