mes-client/PLCDataReader/MainWindow.cs

using System;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using UAS_PLCDataReader.PublicMethod;

namespace UAS_PLCDataReader
{
    public partial class MainWindow : Form
    {

        ModeBusTCPServer md = new ModeBusTCPServer();

        public MainWindow()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            IPHostEntry IpEntry = Dns.GetHostEntry(Dns.GetHostName());
            for (int i = 0; i < IpEntry.AddressList.Length; i++)
            {
                if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)
                    if(IpEntry.AddressList[i].ToString()=="192.168.127.20")
                    IP.Text = IpEntry.AddressList[i].ToString();
            }
            Encoding1.Text = Encoding1.Items[0].ToString();
        }

        private void OpenServer_Click(object sender, EventArgs e)
        {
            md.IP = IP.Text;
            md.Port = Port.Text;
            md.Open();
            if (md.IsOpen)
            {
                OpenServer.Enabled = false;
                Port.Enabled = false;
            }
        }

        private void CloseServer_Click(object sender, EventArgs e)
        {
            md.Close();
            if (!md.IsOpen)
            {
                OpenServer.Enabled = true;
                Port.Enabled = true;
            }
        }

        private void SEND_Click(object sender, EventArgs e)
        {
            Console.WriteLine(BaseUtil.ASCIIToString("3A30313033343032314330303030303231374130303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303430DA"));
        }

        public static string HexStringToASCII(string hexstring)
        {
            byte[] bt = HexStringToBinary(hexstring);
            string lin = "";
            for (int i = 0; i < bt.Length; i++)
            {
                lin = lin + bt[i] + " ";
            }

            string[] ss = lin.Trim().Split(new char[] { ' ' });
            char[] c = new char[ss.Length];
            int a;
            for (int i = 0; i < c.Length; i++)
            {
                a = Convert.ToInt32(ss[i]);
                c[i] = Convert.ToChar(a);
            }

            string b = new string(c);
            return b;
        }

        public static byte[] HexStringToBinary(string hexstring)
        {

            string[] tmpary = hexstring.Trim().Split(' ');
            byte[] buff = new byte[tmpary.Length];
            for (int i = 0; i < buff.Length; i++)
            {
                buff[i] = Convert.ToByte(tmpary[i], 16);
            }
            return buff;
        }
    }
}