string  zipfile = "c:\\a.zip";                            //方法1                            FileStream fs = new FileStream(zipfile, FileMode.Open);                            //把文件读取到字节数组                            byte[] zipdata = http://www.mamicode.com/new byte[fs.Length];                            fs.Read(zipdata, 0, zipdata.Length);                            fs.Close();
                            //方法2                            //把文件读取到字节数组                            byte[] zipdata =http://www.mamicode.com/ File.ReadAllBytes(zipfile);