Still having trouble with Delegates, need help with my example

Im writing a basic example of delegates usage to help explain it to me. Here is my idea.
User (object) has a playlist of songObjects.
Each songObject contains a song title and the media the song is on (MP3 or CD).
There is a MediaPlayer(object) that has two other Objects, a CDPlayer(object) and mp3Player(object)
The user inputs the songObjects list into a media player, calls the play method, and for each song the user expects back a string that lists the song name and the device it was played on.
when calling the play method, the user does not care if the song is played on a cd player or the mp3 Player, only that the song is played and they get a string back stating this, and the device it was played on.
I have some source code but its all over the place as im having trouble implementing this. Is this a valid example?

Dude.. Let me define your classes.. Please raise hand if I am wrong.

namespace ConsoleApplication25
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create user object and create song list
            User user = new User();
            user.SongList = new List();
            user.SongList.Add(new Song { Title = "Song1", Media = "mp3" });
            user.SongList.Add(new Song { Title = "Song2", Media = "cd" });

            // Create mediaplayer and pass song list
            MediaPlayer mediaPlayer = new MediaPlayer();

            // Call the play, see the title printe on screen
            mediaPlayer.Play(user.SongList, TitlePrintMethod);

            // Wait for key and return
            Console.ReadKey(false);
        }

        public static void TitlePrintMethod(string title)
        {
            Console.WriteLine(title);
        }
    }

    // User Class
    public class User
    {
        public IList SongList
        {
            get;
            set;
        }
    }

    public class Song
    {
        public string Title
        {
            get;
            set;
        }

        public string Media
        {
            get;
            set;
        }
    }

    public class MediaPlayer
    {
        public delegate void MessageDelegate(string message);

        public void Play(IList list, MessageDelegate message)
        {
            foreach (Song song in list)
                message(song.Title);
        }
    }
}

Please let me know any further changes are required (or please mark as answer if it accomplishes)

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Jean Paul16y ago
Dude.. Let me define your classes.. Please raise hand if I am wrong.

namespace ConsoleApplication25
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create user object and create song list
            User user = new User();
            user.SongList = new List();
            user.SongList.Add(new Song { Title = "Song1", Media = "mp3" });
            user.SongList.Add(new Song { Title = "Song2", Media = "cd" });

            // Create mediaplayer and pass song list
            MediaPlayer mediaPlayer = new MediaPlayer();

            // Call the play, see the title printe on screen
            mediaPlayer.Play(user.SongList, TitlePrintMethod);

            // Wait for key and return
            Console.ReadKey(false);
        }

        public static void TitlePrintMethod(string title)
        {
            Console.WriteLine(title);
        }
    }

    // User Class
    public class User
    {
        public IList SongList
        {
            get;
            set;
        }
    }

    public class Song
    {
        public string Title
        {
            get;
            set;
        }

        public string Media
        {
            get;
            set;
        }
    }

    public class MediaPlayer
    {
        public delegate void MessageDelegate(string message);

        public void Play(IList list, MessageDelegate message)
        {
            foreach (Song song in list)
                message(song.Title);
        }
    }
}

Please let me know any further changes are required (or please mark as answer if it accomplishes)
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