private void button1_Click_2(object sender, EventArgs e)
{
Frm_MenuPrincipal menuPrincipal = new Frm_MenuPrincipal();
this.Hide();
menuPrincipal.Show();
}
private void btnSalirApp_Click(object sender, EventArgs e)
{
Frm_MenuPrincipal frm_MenuPrincipal = new Frm_MenuPrincipal();
frm_MenuPrincipal.Show();
this.Hide();
}