using System;

using Renci.SshNet;

using System.Collections.Generic;

using System.Text;

using System.Security.Cryptography;

using System.Linq;

namespace Foo

{

    public class Bar

    {

        public static void Main(string[] args)

        {

            var str = @"display service-port port 0/6/6 ont 0 

  Switch-Oriented Flow List

  -----------------------------------------------------------------------------

   INDEX VLAN VLAN     PORT F/ S/ P VPI  VCI   FLOW  FLOW       RX   TX   STATE

         ID   ATTR     TYPE                    TYPE  PARA

  -----------------------------------------------------------------------------

     926 3205 common   gpon 0/6 /6  0    325   vlan  3205       -    -    down 

  -----------------------------------------------------------------------------

   Total : 1  (Up/Down :    0/1)

   Note : F--Frame, S--Slot, P--Port,

          VPI indicates ONT ID for PON, VCI indicates GEM index for GPON,

          v/e--vlan/encap, pritag--priority-tagged,

          ppp--pppoe, ip--ipoe, ip4--ipv4oe, ip6--ipv6oe, vxl--vxlan.

          When FLOW TYPE is plist, the value of FLOW PARA is a byte in

          hexadecimal format and indicates a priority list. Eight bits

          of its binary value indicate priorities 0-7 from the least

          significant bit to the most significant bit. Value 1 indicates

          that the priority is used. For example, if FLOW PARA is 0x23 and

          its binary format is 0010 0011, priorities 0, 1 and 5 are used";

             var respostaServicePort = str.Split('\r', '\n').ToList();

            Console.WriteLine(respostaServicePort.Exists(p => !p.ToUpperInvariant().Contains("error".ToUpperInvariant()) && !p.ToUpperInvariant().Contains("Failure".ToUpperInvariant())));

            Console.WriteLine(respostaServicePort.Exists(p => p.ToUpperInvariant().Contains("vlan".ToUpperInvariant())));

            var linhasServicePort = respostaServicePort.FindAll(p => p.ToUpperInvariant().Contains("vlan".ToUpperInvariant())).ToList();

                            foreach (var linha in linhasServicePort)

                            {

                                var campos = linha.Split(' ', ':', '\t');

                                var IdVlan = linha.ElementAtOrDefault(1);

                                if(linha.Trim().Replace(" ", String.Empty).ToUpperInvariant().Contains("gpon0/6/6".ToUpperInvariant()))

                                {

                                    Console.WriteLine("undo service-port port 0/{onu.IdSlot}/{onu.IdPon} ont {onu.OntID}");

                                    break;

                                }

​

                            }

        }

    }

}