/// <summary>
/// Method used to see current book's tag value
/// </summary>
/// <param name="book"> Current book </param>
/// <param name="prop"> Property name </param>
/// <returns> Tag value </returns>
public object Tag(Book book, string prop)
{
return(book.GetType().GetProperty(prop).GetValue(book));
}
public string ToString(Book b)
{
return(string.Format("{0} record: {1}, {2}", b.GetType().Name, b.Author, b.Title));
}