public Form1() { InitializeComponent(); AssignHouseRects(); try { // Creating RFID reader and adding the events needed ConnectedRFIDReader = new RFID(); ConnectedRFIDReader.Attach += new AttachEventHandler(IsAttached); ConnectedRFIDReader.Detach += new DetachEventHandler(IsDetached); ConnectedRFIDReader.Tag += new TagEventHandler(ProcessThisTag); } catch (PhidgetException) { MessageBox.Show("error at start-up."); } // running readchip connectionDB = new DBhelper(); tempCampHostList = connectionDB.AllCampHost(); assignOtherGuests = false; readchip(); }