string s = "FF D8 FF E0 00 10 4A 46 49 46 00 01 01 01 00 。。。。。。。。
byte[] buff = System.Text.Encoding.ASCII.GetBytes(s);
MemoryStream ms = new MemoryStream(buff);
Image image = Image.FromStream(ms);
image.Save("D:\oop.jpg");
ms.Close();
十六进制码没有粘贴完,报错显示“参数无效”