public async Task Ping(int lowLim, int uppLim)
            {
                string[] ipParts = GetCurrentIPAddress().Split('.');
                for (int i = lowLim; i <= uppLim; i++)
                {
                    IterEvent.Invoke(i);
                    PingReply answer = await AsincPing(string.Format("{0}.{1}.{2}.{3}", ipParts[0], ipParts[1], ipParts[2], i.ToString()));
                    string macAddress = await GetMACAddress(answer.Address);
                    try
                    {
                        if (answer.Status == IPStatus.Success)
                        {
                            PingEvent.Invoke(answer.Address.ToString() + "|" + macAddress + "|" + answer.RoundtripTime +
                                       "|" + Dns.GetHostEntry(answer.Address.ToString()).HostName);
                        }
                    }
                    catch
                    {
                        PingEvent.Invoke(answer.Address.ToString() + "|" + macAddress + "|" + answer.RoundtripTime + "|" + ".....");
                    }
                }
            }