using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace events

{

    public class Program

    {

        public static void Main(string[] args)

        {

            reserveCustomer rCust = new reserveCustomer();

            rCust.allocateCustomerToTable += MyTable;

            mealChange mChange = new mealChange();

            mChange.serveCustomerMeal += MyCustomer;

​

            Queue<Customer> cust = new Queue<Customer>();

​

            cust.Enqueue(new Customer() { FirstName = "Vasuki", LastName = "Kana" });

            cust.Enqueue(new Customer() { FirstName = "San", LastName = "Jeev" });

            cust.Enqueue(new Customer() { FirstName = "Bhish", LastName = "Man" });

            cust.Enqueue(new Customer() { FirstName = "San", LastName = "Bhish" });

            cust.Enqueue(new Customer() { FirstName = "Vas", LastName = "San" });

​

​

​

            foreach (var cus in cust)

            {

                rCust.createNotification();

                Console.WriteLine("---------------");

                Console.WriteLine("{0} {1} got a table", cus.FirstName, cus.LastName);

                mChange.createNotificationforMeal();

​

           }

​

            Console.WriteLine("Everyone is full!");

            Console.ReadLine();

        }

​

        public static void MyTable(object sender, table e)

        {

            Console.WriteLine(e.tablestatus);

        }

​

        public static void MyCustomer(object sender, Customer e)

        {

            foreach (var values in Enum.GetValues(typeof(Customer.meal)))

            {

             Console.WriteLine("{0} {1} is having {2}.", e.FirstName, e.LastName, values);

            }

            Console.WriteLine("\n");

        }

​

    }

​

​

    public class reserveCustomer

    {

        public event tableOpen allocateCustomerToTable;

​

        public void createNotification()

        {

            if (allocateCustomerToTable != null)

            {

                table tableinfo = new table();

                tableinfo.tablestatus = "Table is Open";

                allocateCustomerToTable(this, tableinfo);

​

            }

​

​

          }

    }

​

​

    public delegate void tableOpen(object sender, table e);

​

​

​

    public class table : EventArgs

    {

        public string tablestatus { get; set; }

    }

​

​

    public delegate void CMealChange(object sender, Customer e);

​

    public class Customer : EventArgs

    {

        public string FirstName { get; set; }

        public string LastName { get; set; }

​

        public enum meal

        {

            Appetizer, Main, Desert, Done

        }

​

        public meal Meals { get; set; }

​

    }

​

    public class mealChange

    {

        public event CMealChange serveCustomerMeal;

​

        public void createNotificationforMeal()

        {

            if (serveCustomerMeal != null)

            {

                serveCustomerMeal(this, new Customer());

            }

        }

    }

​

}

​