Programa De Gestión De Información De Libros En C#

using System;
using System.Collections.Generic;
using System.IO;

// Book class to store information about each book
public class Book
{
    public string Title { get; set; }
    public string Author { get; set; }
    public int Year { get; set; }

    // Constructor to initialize a new book
    public Book(string title, string author, int year)
    {
        Title = title;
        Author = author;
        Year = year;
    }

    // Method to display book details
    public override string ToString()
    {
        return $"{Title} by {Author} ({Year})";
    }
}

class Program
{
    // File path for storing book data
    static string filePath = "books.txt";

    // List to store books
    static List books = new List();

    // Main method to run the program
    static void Main(string[] args)
    {
        // Check if the file exists. If not, create a new one.
        if (File.Exists(filePath))
        {
            // Load existing book data from the file
            LoadBooks();
        }
        else
        {
            // Create a new file if it does not exist
            File.Create(filePath).Dispose();
        }

        // Allow user to input new book data
        while (true)
        {
            Console.WriteLine("Enter book title (or type 'exit' to quit):");
            string title = Console.ReadLine();
            if (title.ToLower() == "exit") break;

            Console.WriteLine("Enter book author:");
            string author = Console.ReadLine();

            Console.WriteLine("Enter publication year:");
            int year;
            while (!int.TryParse(Console.ReadLine(), out year))
            {
                Console.WriteLine("Invalid input. Please enter a valid year:");
            }

            // Create a new Book object and add it to the list
            Book newBook = new Book(title, author, year);
            books.Add(newBook);

            // Save the book to the file
            SaveBooks();
        }

        // Display all entered books
        Console.WriteLine("\nBooks in the system:");
        foreach (var book in books)
        {
            Console.WriteLine(book);
        }
    }

    // Method to load books from the file
    static void LoadBooks()
    {
        // Read each line from the file and convert it to a Book object
        string[] lines = File.ReadAllLines(filePath);
        foreach (string line in lines)
        {
            var parts = line.Split(',');
            string title = parts[0].Trim();
            string author = parts[1].Trim();
            int year = int.Parse(parts[2].Trim());
            books.Add(new Book(title, author, year));
        }
    }

    // Method to save books to the file
    static void SaveBooks()
    {
        // Clear the file and write the updated list of books
        File.WriteAllLines(filePath, books.ConvertAll(book => $"{book.Title}, {book.Author}, {book.Year}"));
    }
}

 Output

Enter book title (or type 'exit' to quit):
The Great Gatsby
Enter book author:
F. Scott Fitzgerald
Enter publication year:
1925

Enter book title (or type 'exit' to quit):
Moby Dick
Enter book author:
Herman Melville
Enter publication year:
1851

Enter book title (or type 'exit' to quit):
exit

Books in the system:
The Great Gatsby by F. Scott Fitzgerald (1925)
Moby Dick by Herman Melville (1851)