Wiznet W5500 Example throw exception

TinyCLR OS
8

And here is code, a lightly modified version of your demo app for the W5500 driver:

using GHIElectronics.TinyCLR.Devices.Gpio;
using GHIElectronics.TinyCLR.Devices.Spi;
using GHIElectronics.TinyCLR.Drivers.BasicNet.Sockets;
using GHIElectronics.TinyCLR.Drivers.BasicNet;
using GHIElectronics.TinyCLR.Drivers.WIZnet.W5500;
using GHIElectronics.TinyCLR.Pins;
using System;
using System.Collections;
using System.Diagnostics;
using System.Text;
using System.Threading;

namespace TinyCLRApplication2
{
    internal class Program
    {
        static void Main()
        {
            GpioPin cs = GpioController.GetDefault().OpenPin(SC20100.GpioPin.PB1);          // Arduino D10 - Correct for Arduino SPI CS
            GpioPin reset = null; // GpioController.GetDefault().OpenPin(SC20100.GpioPin.PC4);       // Arduino D7
            GpioPin interrupt = null; // GpioController.GetDefault().OpenPin(SC20100.GpioPin.PA15);  // Need to find a pin for this. Standard ethernet shields don't support IRQ

            SpiController spiController = SpiController.FromName(SC20100.SpiBus.Spi6);            // Arduino D11, D12, D13

            W5500Controller networkController = new W5500Controller(spiController, cs, reset, interrupt);
            bool isReady = false;

            networkController.NetworkAddressChanged += (a, b) =>
            {
                isReady = networkController.Address.GetAddressBytes()[0] != 0 && networkController.Address.GetAddressBytes()[1] != 0;
            };

            NetworkInterfaceSettings networkSettings = new NetworkInterfaceSettings()
            {                 
                Address = new IPAddress(new byte[] { 192, 168, 0, 200 }),
                SubnetMask = new IPAddress(new byte[] { 255, 255, 255, 0 }),
                GatewayAddress = new IPAddress(new byte[] { 192, 168, 0, 1 }),
                DnsAddresses = new IPAddress[] { new IPAddress(new byte[] { 75, 75, 75, 75 }), new IPAddress(new byte[] { 75, 75, 75, 76 }) },

                MacAddress = new byte[] { 0x02, 0x01, 0x02, 0x03, 0x04, 0x05 },
                //DhcpEnable = true,
                //DynamicDnsEnable = true,
                Hostname = "KenoInterface"
            };


            networkController.SetInterfaceSettings(networkSettings);
            try {
                networkController.Enable();
            } catch (Exception ex) { 
                Debug.WriteLine($"Exception : {ex.Message}\r\n"); 
            }

            while (isReady == false) ; // wait for valid IP address. 

            var dns = new Dns(networkController);
            var host = dns.GetHostEntry("www.example.com");
            var ep = new IPEndPoint(host.AddressList[0], 80);

            // Streaming socket
            var socket = new Socket(networkController, AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            socket.Connect(ep);


            var content = "GET / HTTP/1.1\r\nHost: www.example.com\r\nConnection: close\r\n\r\n";
            socket.Send(Encoding.UTF8.GetBytes(content));

            var received = socket.Receive(SocketFlags.None);

            if (received.Length > 0)
            {
                var recvdContent = new string(Encoding.UTF8.GetChars(received));
                Debug.WriteLine("Received : \r\n" + recvdContent);
            }
        }
    }
}