用C#实现图片二进制转化

        System.Drawing.Image img = System.Drawing.Image.FromFile("C:\\1.jpg");
        MemoryStream ms = new MemoryStream();
        img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
        ms.Flush();
        ms.Seek(0, SeekOrigin.Begin);
        byte[] buffer = new byte[ms.Length];
        ms.Read(buffer, 0, (int)ms.Length);
        Response.BinaryWrite(buffer);     


        MemoryStream ms2 = new MemoryStream(buffer,0,buffer.Length);
        ms2.Seek(0, SeekOrigin.Begin);
        System.Drawing.Image img2 = System.Drawing.Image.FromStream(ms2);
        img2.Save("C:\\2.jpg", System.Drawing.Imaging.ImageFormat.Icon);