EventsAndDelegates

using System;
using System.Threading;

namespace EventsAndDelegates
{
    class MessagingService
    {
        public void OnPatcherFinished(object source, PatcherEventArgs e)
        {
            Console.WriteLine("Check to see if your patch was successful? Y or N\n");

            char input = Convert.ToChar(Console.ReadKey().KeyChar);

            Console.WriteLine("\n");

            if (input == 'y' || input == 'Y')
            {
                Console.WriteLine("Checking to see if game is up-to-date...\n");
                Thread.Sleep(3000);

                if (e.UpdateData.IsGameUpToDate == true)
                {
                    Console.WriteLine("Game is up to date! Press any key to close!\n");
                    Console.ReadLine();
                }

                else
                {
                    Console.WriteLine("Game is no up to date. Please re-run the patcher. :(\n");
                    Console.ReadLine();
                }
            }
            else
            {
                Console.WriteLine("Game patch was no validated. Goodbye.\n");
                Console.ReadLine();
            }

        }
    }

    public class UpdateData
    {
        public string DataToBeAppendedLocation { get; set; }
        public bool IsGameUpToDate { get; set; }

    }

}

    public class PatcherEventArgs : EventArgs
    {
        public UpdateData UpdateData { get; set; }
    }

    public class Patcher
    {
        // 1 - Define a delegate { No need, used pre-defined "EventHandler" from System namespace }
        // 2 - Define an event based on that delegate { Line 21 }
        // 3 - Raise that event in a protected, virtual method { Line 36-41 }
        // 4 - Derive a new class from EventArts containing event arguments to be passed { Line 9-12 }
        // 5 - Link event to function to be calling on the event { in Program.cs, Line 17 }
        // 6 - Call the method that raises the event { Line 35 }


        public event EventHandler<PatcherEventArgs> PatcherFinished;

        public void Patch(UpdateData data)
        {
            Console.WriteLine("Patching game files from {0}...", data.DataToBeAppendedLocation);
            Thread.Sleep(3000);
            Console.WriteLine("\nSuccess! Press any key to continue...");
            Console.ReadLine();

            data.IsGameUpToDate = true;

            OnPatcherFinished(data);

        }

        protected virtual void OnPatcherFinished(UpdateData data)
        {
            if (PatcherFinished != null)
                PatcherFinished(this, new PatcherEventArgs() { UpdateData = data });

        }
    }
}