//Cambia el Display
private void button3_Click(object sender, EventArgs e)
{
String a = comboBox1.Text;
String c = a.Replace("Estacion ", "");
int index = Convert.ToInt32(c);
index--;
Station.Station st = stations[index];
String nombre = comboBox1.Text;
String dis = richTextBox3.Text;
st.setLCD(dis, out b, out b);
richTextBox3.Clear();
}