private string FileTo16X(string File)
        {

            string tempStr;
            FileStream fs = new FileStream(File, FileMode.Open);
            int streamLength = (int)fs.Length;
            byte[] BTFile = new byte[streamLength];
            fs.Read(BTFile, 0, streamLength);
            fs.Close();
          tempStr=  byteToHexStr(BTFile);



            return tempStr;
        }