private void button3_Click_1(object sender, EventArgs e)
        {
            CadastroNota nota = new CadastroNota();

            nota.ShowDialog();
        }
        private void pictureBox7_Click(object sender, EventArgs e)
        {
            CadastroNota cad = new CadastroNota();

            cad.ShowDialog();
        }
        private void button3_Click(object sender, EventArgs e)
        {
            CadastroNota cad = new CadastroNota();

            cad.ShowDialog();
        }