public virtual bool Add(Book book)
{
book._Id = ++Id;
if (book.Check())
{
_bookBase.Add(book);
return true;
}
else
return false;
}
public virtual bool Remove(Book book)
{
throw new System.NotImplementedException();
}
public virtual bool Add(Book Book)
{
throw new System.NotImplementedException();
}
public virtual bool Change(Book book)
{
_bookBase[book._Id] = book;
return true;
}
public virtual bool Remove(Book book)
{
_bookBase.Remove(book);
return true;
}
