private void cartãoDeCréditoToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            FrmListCreditCard form = new FrmListCreditCard();

            form.FormClosed += Form_FormClosed;
            form.Show();
        }
        private void ctCreditCard_Click(object sender, EventArgs e)
        {
            FrmListCreditCard form = new FrmListCreditCard();

            form.FormClosed += Form_FormClosed;
            form.Show();
        }