C#

public void  serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            try
            {
                RxString = serialPort1.ReadLine();
                label1.Text = RxString;
            }
            catch (Exception)
            {
                MessageBox.Show("Data Receive Error: Close Port & Change Baud Rate" );
                System.Threading.Thread.Sleep(5000);
                bool dataerror = true;
                DataRecError(dataerror);
                return;
            }
            this.Invoke(new EventHandler(DisplayText));
            i++;
        }