WindowsFormsApplication2/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;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {// 下载于www.51aspx.com
        public Form1()
        {
            InitializeComponent();
        }
       
        private void button1_Click(object sender, EventArgs e)
        {
            string s = this.textBox1.Text.Trim();
            byte[] bytes = HexStringToByteArray(s);
            string ss = System.Text.Encoding.UTF8.GetString(bytes);
            byte[] dataBytes = System.Text.Encoding.UTF8.GetBytes(ss);
            //数据长度
            byte[] dataLength = BitConverter.GetBytes(ss.Length);
            this.textBox2.Text = ss;
            //数据长度超出两个字节
            if (dataLength[2] != 0x00 || dataLength[3] != 0x00)
            {
                label1.Text+= "0x00";
                label1.Text += "0x00";
            }
            else
            {
                label1.Text+= dataLength[1].ToString("X2");
                label1.Text += dataLength[0].ToString("X2");
            }
        }


        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' };
        // 下载于www.51aspx.com
        private bool CharInArray(char aChar, char[] charArray)
        {
            return (Array.Exists<char>(charArray, delegate(char a) { return a == aChar; }));
        }



        /// <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)