private void addButton_Click(object sender, EventArgs e)
 {
     try
     {
         ZenFire.IProduct product = zf.GetProduct(productTextBox.Text, "CME");
         zf.Subscribe(product);
         zf.ReplayTicks(product, new DateTime(2009, 9, 24, 15, 00, 00));
     }
     catch (System.Exception x)
     {
         MessageBox.Show("Error subscribing " + x.Message);
     }
 }