CODEWITHSUNDEEP
c#
Alex Gordon
Alex Gordon

Reputation: 60691

serial port does not exist in current context: c#

here's the code:

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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public class ThreadWork
        {
            private static SerialPort serialPort1;
            public static void DoWork()
            {
                serialPort1.Open();
                serialPort1.Write("AT+CMGF=1\r\n");
                //Thread.Sleep(500);
                serialPort1.Write("AT+CNMI=2,2\r\n");
                //Thread.Sleep(500);
                serialPort1.Write("AT+CSCA=\"+4790002100\"\r\n");
                //Thread.Sleep(500);
                serialPort1.DataReceived += serialPort1_DataReceived_1;
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            ThreadStart myThreadDelegate = new ThreadStart(ThreadWork.DoWork);
            Thread myThread = new Thread(myThreadDelegate);
            myThread.Start();
        }

        private void serialPort1_DataReceived_1(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            string response = serialPort1.ReadLine();
            this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n")));
        }
    }
}

and i get an error on this line:

string response = serialPort1.ReadLine();

it says::

Error 1 The name 'serialPort1' does not exist in the current context C:\Users\alexluvsdanielle\AppData\Local\Temporary Projects\WindowsFormsApplication1\Form1.cs 44 31 WindowsFormsApplication1

what am i doing wrong?

Upvotes: 1

Views: 5034

Answers (2)

Keith Nicholas
Keith Nicholas

Reputation: 44288

serialport1 exists on the class ThreadWork, not in your form

Upvotes: 1

ChrisW
ChrisW

Reputation: 56083

Move the definition of serialPort1 up a few lines, into the Form1 class instead of the Form1.ThreadWork class.

WHere it is at the moment, in the Form1.ThreadWork class, it can only seen by members of the Form1.ThreadWork class, not the Form1 class.

Upvotes: 1

Related Questions