Lab6-3

//menu with more than one employee (struct)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Project_3
{
    struct Employee
    {
        public string eName;
        public int eID, eSalary;

        public Employee(string name, int id, int salary)
        {
            eName = name;
            eID = id;
            eSalary = salary;
        }

        //public void displayInfo()
        //{
        //    Console.WriteLine("Employee ID: {0}\nEmployee Name: {1}\nEmployee Salary: {2}", eID, eName, eSalary);
        //}
    }

    class Program
    {
        private static int index = 0;
        static List<Employee> employees = new List<Employee>();

        static void Main(string[] args)
        {
            List<string> menuItems = new List<string>() { "New", "Display", "Exit" };

            Console.CursorVisible = false;

            while (true)
            {
                string selectedMenuItem = drawMenu(menuItems);
                if (selectedMenuItem == "New")
                {
                    Console.Clear();
                    newEmployee();
                }
                else if (selectedMenuItem == "Display")
                {
                    Console.Clear();
                    displayEmployee();
                }
                else if (selectedMenuItem == "Exit")
                {
                    Environment.Exit(0);
                }
            }
        }

        private static string drawMenu(List<string> items)
        {
            for (int i = 0; i < items.Count; i++)
            {
                if (i == index)
                {
                    Console.BackgroundColor = ConsoleColor.Gray;
                    Console.ForegroundColor = ConsoleColor.Black;
                    Console.WriteLine(items[i]);
                }
                else
                {
                    Console.WriteLine(items[i]);
                }
                Console.ResetColor();
            }

            ConsoleKeyInfo ckey = Console.ReadKey();

            if (ckey.Key == ConsoleKey.DownArrow)
            {
                if (index == items.Count - 1)
                {
                    //index = 0;
                }
                else
                {
                    index++;
                }
            }
            else if (ckey.Key == ConsoleKey.UpArrow)
            {
                if (index <= 0)
                {
                    //index = menuItems.count - 1;
                }
                else
                {
                    index--;
                }
            }
            else if (ckey.Key == ConsoleKey.Enter)
            {
                return items[index];
            }
            else
            {
                return "";
            }

            Console.Clear();
            return "";
        }

        static void newEmployee()
        {
            string name;
            int id, salary;
            Console.WriteLine("Enter employee information.");
            Console.Write("ID: "); id = int.Parse(Console.ReadLine());
            Console.Write("Name: "); name = Console.ReadLine();
            Console.Write("Salary: "); salary = int.Parse(Console.ReadLine());

            Employee e = new Employee(name, id, salary);
            employees.Add(e);
        }

        static void displayEmployee()
        {
            foreach (var employee in employees)
            {
                Console.WriteLine("Employee ID: {0}\nEmployee Name: {1}\nEmployee Salary: {2}\n", employee.eID, employee.eName, employee.eSalary);
            }
        }
    }
}