最近学习了图片的转换，就学习了一下图片从二进制转换成十六进制，十六进制TXT文件转换成图片形式。

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.IO;namespace pictu{    public partial class Form1 : DevExpress.XtraEditors.XtraForm    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            //从文件目录中将图片读入到IO流中            FileStream fs = new FileStream(@"E:\图片转换测试\发送图片\1.jpg", FileMode.Open, FileAccess.Read);            //对数据流进行编码八位二进制            BinaryReader br = new BinaryReader(fs);            //形成十六进制最后存储的txt文件            StreamWriter sw = new StreamWriter(@"E:\图片转换测试\发送图片\1.txt");            //得到数据流的长度            int length = (int)fs.Length;            while (length > 0)            {                byte tempByte = br.ReadByte();                //将八位二进制转换为十六进制字符串形式                string tempStr = Convert.ToString(tempByte, 16);               //写入txt                sw.WriteLine(tempStr);                length--;            }            //关闭IO流释放资源            fs.Close();            br.Close();            sw.Close();        }        /// 
        /// 原理与上面基本相同，仔细看就懂了        /// 
        ///         ///         private void button2_Click(object sender, EventArgs e)        {            FileStream fs = new FileStream(@"E:\图片转换测试\接收图片\1.jpg", FileMode.Create, FileAccess.Write); //创建1.jpg图片            BinaryWriter bw = new BinaryWriter(fs);            StreamReader sr = new StreamReader(@"E:\图片转换测试\发送图片\1.txt");         //打开你的16进制的txt            while (sr.Peek() != -1)            {                string tempStr = sr.ReadLine();                byte tempByte = Convert.ToByte(tempStr, 16);                bw.Write(tempByte);            }            fs.Close();            bw.Close();            sr.Close();        }        private void Form1_Load(object sender, EventArgs e)        {        }    }}