Implementing SuccessCallBack and FailedCallBack

SuccessAndFailedCallBackInC#.cs

using System;
using System.Collections.Generic;

namespace TestConsole
{

    public class Book
    {
        public int Id { get; set; }
        public string Title { get; set; }
    }

    public delegate void SuccessCallBack(string title, string message);
    public delegate void FailedCallBack(string message);
    class Program
    {
        public static List<Book> books = new List<Book>();
        static void Main(string[] args)
        {
            var book = new Book { Id = 3, Title = "My Book" };
            AddBook(book, Success, Failed);
        }

        static void AddBook(Book book, SuccessCallBack SuccessCB, FailedCallBack FailedCB)
        {
            books.Add(book);
            bool bSuccess = true;
          //bool bSuccess = false;

            if (bSuccess)
            {
                SuccessCB(book.Title, "Added successully");
            }
            if (!bSuccess)
            {
                FailedCB("Failed to add!!");
            }
        }
        private static void Failed(string message)
        {
            Console.WriteLine(message);
        }

        private static void Success(string title, string message)
        {
            Console.WriteLine(title + " " + message);
        }

    }
}