private void Returns_books_Click(object sender, EventArgs e) { Book_by_times form = new Book_by_times(); form.Owner = this; form.flag = By.returned; form.Show(); }
private void Takes_book_Click(object sender, EventArgs e) { Book_by_times form = new Book_by_times(); form.Owner = this; form.flag = By.taken; form.Show(); }
private void Books_of_reader_Click(object sender, EventArgs e) { Book_by_times form = new Book_by_times(); form.Owner = this; form.flag = By.reader; form.Show(); }