//Modificar Reto
private void button5_Click(object sender, EventArgs e)
{
Reto reto = new Reto(this);
RetoCEN retocen = new RetoCEN();
reto.Retoen = retocen.ReadOID(Int32.Parse(listBox1.SelectedValue.ToString()));
reto.Visible = true;
}
//Nuevo Reto
private void button6_Click(object sender, EventArgs e)
{
Reto reto = new Reto(this);
reto.Visible = true;
}