when i'm running it in step by step it works well while it's not in direct running.even textbox not showing the text

protected void Page_Load(object sender, EventArgs e)         {             phidgetRFID = new Phidgets.RFID();             phidgetRFID.open();         }         private void phidgetRFID_Attach(object sender, Phidgets.Events.AttachEventArgs e)         {             if (e.Device.Attached == true)             {                 Attached.Text = "TRUE" ;                 Label1.Text = "true" ;             }   &nb ...