/// <summary>
/// Add new book into BookStorage
/// </summary>
/// <param name="book"> Book to add </param>
public void Add(Book book)
{
if (book != null)
{
var results = new List <ValidationResult>();
var context = new ValidationContext(book);
if (!Validator.TryValidateObject(book, context, results, true))
{
foreach (var error in results)
{
Console.WriteLine(error.ErrorMessage);
}
}
else
{
if (!_db.Books.Contains(book))
{
_db.Add(book);
}
else
{
throw new ArgumentException("Duplicated book!");
}
}
}
}