private void pictureBox1_Click(object sender, EventArgs e)
        {
            this.Hide();
            ventanaContratos form9 = new ventanaContratos();

            form9.Show();
        }
        private void pictureBox5_Click(object sender, EventArgs e)
        {
            ventanaContratos ventanaContratos = new ventanaContratos();

            ventanaContratos.Show();
        }