private void mBookDeleteActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_mBookDeleteActionPerformed
        int nRow = uBook.getSelectedRow();
        //       String nBookName = uBook.getValueAt(nRow, 0).toString();
        String nBookID = uBook.getValueAt(nRow, 2).toString();
        oDB.exec("Delete From Page where BookID = " + nBookID);
        oDB.exec("Delete From Book where ID = " + nBookID);
        refreshBookList();
    }