/// <summary>
        /// Get all adapters in the system.
        ///
        /// For the NDIS_MEDIUM enumeration: 0 - NdisMedium802_3; 16 - NdisMediumNative802_11
        /// </summary>
        /// <returns></returns>
        private List <NM_NIC_ADAPTER_INFO> GetAdapters()
        {
            uint errno;
            uint adapterCnt;
            List <NM_NIC_ADAPTER_INFO> adapters = new List <NM_NIC_ADAPTER_INFO>();

            if (this.captureEngineHandle != IntPtr.Zero)
            {
                errno = NetmonAPI.NmGetAdapterCount(this.captureEngineHandle, out adapterCnt);
                if (errno == 0)
                {
                    for (uint i = 0; i < adapterCnt; i++)
                    {
                        NM_NIC_ADAPTER_INFO adapterInfo = new NM_NIC_ADAPTER_INFO();
                        adapterInfo.Size = (ushort)System.Runtime.InteropServices.Marshal.SizeOf(typeof(NM_NIC_ADAPTER_INFO));

                        errno = NetmonAPI.NmGetAdapter(this.captureEngineHandle, i, ref adapterInfo);
                        if (errno == 0)
                        {
                            //Only take Ethernet or 802.11 wireless adapters.
                            if (adapterInfo.MediaType == 0 || (uint)adapterInfo.MediaType == 16)
                            {
                                adapters.Add(adapterInfo);
                            }
                        }
                        else
                        {
                            throw new Exception("NmGetAdapter() failed. Error=" + errno);
                        }
                    }
                }
            }

            return(adapters);
        }
        public void Test()
        {
            bool             isElevated;
            WindowsIdentity  identity  = WindowsIdentity.GetCurrent();
            WindowsPrincipal principal = new WindowsPrincipal(identity);

            isElevated = principal.IsInRole(WindowsBuiltInRole.Administrator);

            Console.WriteLine($"Elevated permissions: {isElevated}");


            capHandler = new CaptureCallbackDelegate(CapHandlerCallback);
            uint ret;

            IntPtr myCapEng;

            ret = NetmonAPI.NmOpenCaptureEngine(out myCapEng);
            if (ret != 0)
            {
                Console.WriteLine("Error {0}\n", ret);
            }
            else
            {
                uint AdptCount;
                ret = NetmonAPI.NmGetAdapterCount(myCapEng, out AdptCount);
                if (ret != 0)
                {
                    NetmonAPI.NmCloseHandle(myCapEng);
                    Console.WriteLine("Error {0}\n", ret);
                }
                else
                {
                    // Creates a capture file which will store the last 10MB of traffic captured
                    ret = NetmonAPI.NmCreateCaptureFile(this.filename, 10000000, NmCaptureFileFlag.WrapAround, out this.capFile, out this.size);

                    if (ret != 0)
                    {
                        Console.Write("Error Creating File");
                    }

                    Console.WriteLine($"Adapters avalable: {AdptCount}");
                    for (uint i = 0; i < AdptCount; i++)
                    {
                        ret = NetmonAPI.NmConfigAdapter(myCapEng, i, capHandler, IntPtr.Zero, NmCaptureCallbackExitMode.ReturnRemainFrames);
                        if (ret != 0)
                        {
                            Console.WriteLine("Could not config {0}, error {1}", i, ret);
                        }
                        else
                        {
                            Console.WriteLine("Configured Adpt {0}", i);
                        }

                        ret = NetmonAPI.NmStartCapture(myCapEng, i, NmCaptureMode.Promiscuous);
                        if (ret != 0)
                        {
                            Console.WriteLine("Could not Start Capture on {0}, error {1}", i, ret);
                        }
                        else
                        {
                            Console.WriteLine("Started Adpt {0}", i);
                        }
                    }

                    System.Threading.Thread.Sleep(5000);

                    for (uint i = 0; i < AdptCount; i++)
                    {
                        ret = NetmonAPI.NmConfigAdapter(myCapEng, i, capHandler, IntPtr.Zero, NmCaptureCallbackExitMode.ReturnRemainFrames);
                        if (ret != 0)
                        {
                            Console.WriteLine("Could not config {0}, error {1}", i, ret);
                        }
                        else
                        {
                            Console.WriteLine("Configured Adpt {0}", i);
                        }
                        Console.WriteLine("Starting Adpt {0} again", i);

                        ret = NetmonAPI.NmStartCapture(myCapEng, i, NmCaptureMode.Promiscuous);
                        if (ret != 0)
                        {
                            Console.WriteLine("Could not Start Capture again on {0}, error {1}", i, ret);
                        }
                        else
                        {
                            Console.WriteLine("Started Adpt {0} again", i);
                        }
                    }

                    for (uint i = 0; i < AdptCount; i++)
                    {
                        ret = NetmonAPI.NmStopCapture(myCapEng, i);
                        if (ret != 0)
                        {
                            Console.WriteLine("Could not Stop Capture on {0}, error {1}", i, ret);
                        }
                        else
                        {
                            Console.WriteLine("Stopped Adpt {0}", i);
                        }
                    }
                }

                NetmonAPI.NmCloseHandle(myCapEng);
            }
        }