Mastermind

using System;

namespace MasterMind
{
    class Game
    {
        public void DrawStart()
        {
            Console.Clear();
            Random rnd = new Random();
            int numberOne = rnd.Next(1, 7); //This is generating a random number and is saving it within the variable numberOne
            int numberTwo = rnd.Next(1, 7); //This is generating a random number and is saving it within the variable numberTwo
            int numberThree = rnd.Next(1, 7); //This is generating a random number and is saving it within the variable numberThree
            int numberFour = rnd.Next(1, 7); //This is generating a random number and is saving it within the variable numberFour
            Console.WriteLine("This is your first guess.");
            Console.WriteLine("Good luck");
            string gnumberOne = Console.ReadKey().KeyChar.ToString();
            string gnumberTwo = Console.ReadKey().KeyChar.ToString();
            string gnumberThree = Console.ReadKey().KeyChar.ToString();
            string gnumberFour = Console.ReadKey().KeyChar.ToString();
            Console.WriteLine("These are the random numbers");
            Console.WriteLine(numberOne);
            Console.WriteLine(numberTwo);
            Console.WriteLine(numberThree);
            Console.WriteLine(numberFour);
            Console.ReadKey();
        }
    }
    class Menu
    {
        public void DrawMainMenu() // This can be used publically to draw the main menu.
        {
            Console.ForegroundColor = ConsoleColor.Green;
            Console.Clear();
            var game = new Game(); // Loading in from another class so it can be used. Used for DrawStart
            Console.WriteLine("MasterMind's Main Menu");
            Console.WriteLine("1: Play");
            Console.WriteLine("2: Help");
            Console.WriteLine("0: Exit");
            string userInput = Console.ReadKey().KeyChar.ToString(); //Captures the users input.
            if (userInput == "1")
            {
                Console.Clear();
                game.DrawStart();
            }
            if (userInput == "2")
            {
                Console.Clear();
                DrawHelp();
            }
            if (userInput == "0")
            {
                DrawExit();
                Console.ReadLine();
            }
            else // This repeats the menu for if a value which isnt 1, 2 or 0 is entered.
            {
                Console.Clear();
                DrawMainMenu();
            }
        }
        public void DrawHelp() // This is used to print out the help menu.
        {
            Console.Clear();
            Console.WriteLine("Rules Of MasterMind!");
            Console.WriteLine("Mastermind is a game about guessing a 4 digit code. The numbers can range from");
            Console.WriteLine("1-4 and any other numbers will be rejected. It will say in the CMD");
            Console.WriteLine("prompt whether or not you had any of the number correct or false.");
            Console.WriteLine("Press any key to go back to the main menu.");
            Console.ReadKey();
            Console.Clear();
            DrawMainMenu();
            Console.ReadLine();
        }
        public void DrawExit() // This is used to check whether or not the user wants to quit the game.
        {
            Console.Clear();
            Console.WriteLine("You are about to exit the game");
            Console.WriteLine("Are you sure: Y/N");
            string userExit = Console.ReadKey().KeyChar.ToString();
            if (userExit == "Y")
            {
                Environment.Exit(0);
            }
            if (userExit == "y")
            {
                Environment.Exit(0);
            }
            if (userExit == "N")
            {
                Console.Clear();
                DrawMainMenu();
                Console.ReadLine();
            }
            if (userExit == "n")
            {
                Console.Clear();
                DrawMainMenu();
                Console.ReadLine();
            }
            else
            {
                Console.Clear();
                DrawExit();
            }
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var menu = new Menu();
            var game = new Game();
            menu.DrawMainMenu();
            string userInput = Console.ReadKey().KeyChar.ToString();
            if (userInput == "1")
            {
                Console.Clear();
                game.DrawStart();
            }
            if (userInput == "2") //This draws the rules and help menu.
            {
                menu.DrawHelp();
            }
            if (userInput == "0") //This draws the exit.
            {
                menu.DrawExit();
                Console.ReadLine();
            }
        }
    }
}