private void detach_review_author(review Review_author_abc)
{
OnPropertyChanged("review");
Review_author_abc.Author_review = null;
}
private void attach_Review_book(review Review_book_abc)
{
OnPropertyChanging("review");
Review_book_abc.Book_review = this;
}
private void attach_review_author(review Review_author_abc)
{
OnPropertyChanged("review");
Review_author_abc.Author_review = this;
}
private void detach_Review_book(review Review_book_abc)
{
OnPropertyChanging("review");
Review_book_abc.Book_review = null;
}