Menu / streamwriter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.IO;

namespace newconsoleproject
{
    class Program
    {
        static void ListMaker()
        {
            List<string> myList = new List<string>();
            bool mybool = true;
            while (mybool == true)
            {
                Console.Clear();
                Thread.Sleep (1000);
                System.Console.WriteLine("Hello, pick a selection:\n1) List items\n2) Add an item\n3) Delete items\n4) Save\n5) Load\n6) Quit ");
                string answer = Console.ReadLine();
                switch (answer)
                {
                   case "1":
                        System.Console.WriteLine("\n***** Your current list *****");
                    foreach (string i in myList)
                    {
                        System.Console.WriteLine(i);
                    }
                    Console.ReadLine();
                    break;

                    case "2":
                    System.Console.WriteLine("\nEnter new item:");
                    string newItem = Console.ReadLine();
                    myList.Add(newItem);
                    System.Console.WriteLine("\nItem '" + newItem + "' added.");
                    System.Console.WriteLine("\n***** Your current list *****");
                    foreach (string i in myList)
                    {
                        System.Console.WriteLine(i);
                    }
                    Console.ReadLine();
                    break;

                    case "3":
                    System.Console.WriteLine("\n***** Your current list *****");
                    foreach (string i in myList)
                    {
                        System.Console.WriteLine(i);
                    }
                    System.Console.WriteLine("\nDelete item:");
                    string deleteItem = Console.ReadLine();
                    System.Console.WriteLine("\nPlease confirm you want to delete '" + deleteItem + "'?");
                    System.Console.WriteLine("y/n");
                    string answer1 = Console.ReadLine();
                    if (answer1 == "y")
                    {
                        myList.Remove(deleteItem);

                    }
                    System.Console.WriteLine("\n*** " + deleteItem + " removed ***\n");
                    foreach (string i in myList)
                    {
                        System.Console.WriteLine(i);
                    }
                    Console.ReadLine();
                        //Menu();
                    break;

                    case "4":
                    StreamWriter writer = new StreamWriter(@"/Users/phillipcarman/csharp/newconsoleproject/newtxt.txt");
                    foreach (string i in myList)
                    {
                        writer.WriteLine(i);
                    }
                    Console.ReadLine();

                    writer.Close();
                    System.Console.WriteLine("Work saved.");
                    break;

                    case "5":
                    myList.Clear();
                    StreamReader reader = new StreamReader(@"/Users/phillipcarman/csharp/newconsoleproject/newtxt.txt");
                    while (reader.EndOfStream == false)
                    {
                        string line = reader.ReadLine();
                        myList.Add(line);
                    }
                        reader.Close();
                        System.Console.WriteLine("File loaded...");
                        Console.ReadLine();
                    break;

                    case "6":
                    System.Console.WriteLine("\nPlease confirm you want to quit");
                    System.Console.WriteLine("y/n");
                    string answer2 = Console.ReadLine();
                    if (answer2 == "y")
                    {
                        mybool = false;
                    }
                    break;

                    default:
                    System.Console.WriteLine("Thats not an option... yet");
                    break;
                }
            }
        }

        static void Main(string[] args)
        {
            ListMaker();
            System.Console.WriteLine("Good bye");
            Console.ReadLine();

        }
    }
}