private void cToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmcontacorrente = new FrmContaCorrente();

            frmcontacorrente.MdiParent = this;
            frmcontacorrente.Show();
        }
 private void cToolStripMenuItem_Click(object sender, EventArgs e)
 {
     var frmcontacorrente = new FrmContaCorrente();
     frmcontacorrente.MdiParent = this;
     frmcontacorrente.Show();
 }