二进制的一些操作

来源：互联网发布：支付宝数据分析编辑：程序博客网时间：2024/04/29 07:31

byte[] bytemessage = null;
        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();
            open.Filter = "所有文件|*.*";
            if (open.ShowDialog() == DialogResult.OK)
            {
              Stream sw= open.OpenFile();
              BinaryReader br = new BinaryReader(sw);
              bytemessage = new byte[br.BaseStream.Length];
               int j= br.Read(bytemessage, 0, bytemessage.Length);
               br.Close();
               sw.Close();

            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            SaveFileDialog save = new SaveFileDialog();
            save.Filter = "所有文件|*.jpg";
            if (save.ShowDialog() == DialogResult.OK)
            {
                Stream fs = save.OpenFile();
                BinaryWriter wr = new BinaryWriter(fs);
                wr.Write(bytemessage, 0, bytemessage.Length);
                wr.Flush();
                wr.Close();
                fs.Close();

            }
        }