public bool GetData()
        {
            try
            {
                using (SqlConnection cn = new SqlConnection(GetSqlConnectionString()))
                {
                    using (SqlCommand cmd = cn.CreateCommand())
                    {
                        cmd.CommandText = "[sm].[get_data_gl100m_top1]";
                        cmd.CommandType = CommandType.StoredProcedure;                        
                        cn.Open();
                        using (SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection))
                        {
                            if (rdr.HasRows == true)
                            {
                                rdr.Read();
                                Longitude = rdr.GetDecimal(2);
                                Latitude = rdr.GetDecimal(3);
                                BatteryPercentage = rdr.GetInt32(4);
                            }
                        }
                    }
                }
                return true;
            }
            catch (SqlException ex)
            {
                return false;
            }
        }