WindowsFormsApplication1/Form1.cs

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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.Net.Sockets;
using System.Threading;

namespace WindowsFormsApplication1
{// 下载于www.51aspx.com
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
         TcpClient tcp = null;
        NetworkStream workStream = null;

        private enum DataMode { Text, Hex }
        private char[] HexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'a', 'b', 'c', 'd', 'e', 'f' };
        private bool CharInArray(char aChar, char[] charArray)
        {
            return (Array.Exists<char>(charArray, delegate(char a) { return a == aChar; }));
        }
        // 下载于www.51aspx.com
        /// <summary>
        /// 十六进制字符串转换字节数组
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        private byte[] HexStringToByteArray(string s)
        {
            //            s = s.Replace(" ", "");
            StringBuilder sb = new StringBuilder(s.Length);
            foreach (char aChar in s)
            {
                if (CharInArray(aChar, HexDigits))
                    sb.Append(aChar);
            }
            s = sb.ToString();
            int bufferlength;
            if ((s.Length % 2) == 1)
                bufferlength = s.Length / 2 + 1;
            else bufferlength = s.Length / 2;
            byte[] buffer = new byte[bufferlength];
            for (int i = 0; i < bufferlength - 1; i++)
                buffer[i] = (byte)Convert.ToByte(s.Substring(2 * i, 2), 16);
            if (bufferlength > 0)
                buffer[bufferlength - 1] = (byte)Convert.ToByte(s.Substring(2 * (bufferlength - 1), (s.Length % 2 == 1 ? 1 : 2)), 16);
            return buffer;
        }

        /// <summary>
        /// 字节数组转换十六进制字符串
        /// </summary>
        /// <param name="data"></param>