cs11dotnet7/vscode/Chapter05/PacktLibraryModern/Book.cs

using System.Diagnostics.CodeAnalysis; // [SetsRequiredMembers]

namespace Packt.Shared;

public class Book
{
  public Book() { } // For use with initialization syntax.

  [SetsRequiredMembers]
  public Book(string? isbn, string? title)
  {
    Isbn = isbn;
    Title = title;
  }

  // Needs .NET 7 or later as well as C# 11 or later.
  public required string? Isbn { get; set; }

  public required string? Title { get; set; }
  public string? Author { get; set; }
  public int PageCount { get; set; }
}