private void bancoToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            var frmbanco = new FrmBanco();

            frmbanco.MdiParent = this;
            frmbanco.Show();
        }
 private void bancoToolStripMenuItem1_Click(object sender, EventArgs e)
 {
     var frmbanco = new FrmBanco();
     frmbanco.MdiParent = this;
     frmbanco.Show();
 }