using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        SerialPort mySerialPort = new SerialPort("COM6",115200);
        string indata;



        private void serialPort1_DataReceived(object sender,System.IO.Ports.SerialDataReceivedEventArgs e)
        {

            try
            {
                if (InvokeRequired)
                {
                    Invoke(new MethodInvoker(writetotextbox));
                }
            }
            catch
            {

            }
        }

        
        //write to textbox
        private void writetotextbox()
        {
            mySerialPort.Open();
            string s;

            try
            {
                textBox1.AppendText(mySerialPort.ReadExisting());
            }
            catch
            {
                return;
            }

            mySerialPort.Close();
        }

        public Form1()
        {
           
        }


      
       
    }
}