private void ExibirFormCadastro(int codigo)
        {
            if (codigo == 0) return;

            MarcaEdit form = new MarcaEdit(codigo);
            form.ShowDialog();
        }
 private void btnNovo_Click(object sender, EventArgs e)
 {
     MarcaEdit form = new MarcaEdit();
     form.ShowDialog();
     BuildTela();
 }