Sxypex Geo DB reading functions

        //ползалка по файлу БД
        public bool Seek(long Offset, SeekOrigin Origin)
        {
            if (!IsOpen)
            {
                if (string.IsNullOrEmpty(ErrorMessage))
                {
                    ErrorMessage = "Database not open";
                }
                return false;
            }

            try
            {
                SxStream.Seek(Offset, Origin);
            }
            catch (Exception ex)
            {
                ErrorMessage = ex.Message;
                return false;
            }
            return true;
        }

        public byte[] ReadBytes(int Count)
        {
            if (!IsOpen)
            {
                if (string.IsNullOrEmpty(ErrorMessage))
                {
                    ErrorMessage = "Database not open";
                }
                return null;
            }

            return ReadBytes(SxStream, Count);
        }

        private byte[] ReadBytes(FileStream FST, int Count)
        {
            byte[] buf = new byte[Count];
            int readedBytes = 0;
            try
            {
                readedBytes = FST.Read(buf, 0, Count);
            }
            catch (Exception ex)
            {
                ErrorMessage = ex.Message;
                return null;
            }
            if (readedBytes != Count)
            {
                ErrorMessage = "Format error";
                return null;
            }

            return buf;
        }