private void btnsede_Click(object sender, EventArgs e)
{
Supermercado super = new Supermercado();
super.Show();
Login1 login = new Login1();
login.Hide();
}
private void btn_supermercado_Click(object sender, EventArgs e)
{
Supermercado frmsupermercado = new Supermercado();
frmsupermercado.Show();
}