private void BtnMostrarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnMostrarActionPerformed
        // TODO add your handling code here:
        MostrarCentro mc = new MostrarCentro();
        mc.setVisible(true);
        mc.pack();
    }//GEN-LAST:event_BtnMostrarActionPerformed