private void btnDelete_Click(object sender, EventArgs e)
        {
            Books book = new Books();

            book.Code = Convert.ToInt32(txtCode.Text);
            bbll.DeleteBook(book);
            MessageBox.Show("Books Deleted Successfully - Congratulations !!!!!", "Remove Book");
            GetNextBookCode();
            ClearControls();
            txtTitle.Focus();
            isEditMode = false;
        }