UsbDiscoverer Class

public class UsbDiscoverer

Public Class UsbDiscoverer

public ref class UsbDiscoverer

using System;
using Zebra.Sdk.Comm;
using Zebra.Sdk.Printer.Discovery;

public class UsbDiscovererExample {

    public static void Main(string[] args) {
        try {
            foreach (DiscoveredPrinterDriver printer in UsbDiscoverer.GetZebraDriverPrinters()) {
                Console.WriteLine(printer);
            }

            foreach (DiscoveredUsbPrinter usbPrinter in UsbDiscoverer.GetZebraUsbPrinters(new ZebraPrinterFilter())) {
                Console.WriteLine(usbPrinter);
            }
        } catch (ConnectionException e) {
            Console.WriteLine($"Error discovering local printers: {e.Message}");
        }

        Console.WriteLine("Done discovering local printers.");
    }
}

using Android.App;
using Android.OS;
using Android.Views;
using Android.Widget;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Zebra.Sdk.Printer.Discovery;

public class UsbDiscovererExample : Activity {

    protected override void OnCreate(Bundle savedInstanceState) {
        base.OnCreate(savedInstanceState);

        LinearLayout layout = (LinearLayout)View.Inflate(this, Android.Resource.Layout.ActivityListItem, null);
        layout.Orientation = Orientation.Vertical;

        Button testButton = new Button(this) {
            Text = "Run USB Discovery Example",
            LayoutParameters = new ViewGroup.LayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent))
        };
        layout.AddView(testButton);

        SetContentView(layout);

        testButton.Click += async (sender, e) => {
            await Task.Run(() => {
                UsbDiscoveryHandler discoveryHandler = new UsbDiscoveryHandler();
                UsbDiscoverer.FindPrinters(ApplicationContext, discoveryHandler);
                while (!discoveryHandler.DiscoveryComplete) {
                    Thread.Sleep(10);
                }

                foreach (DiscoveredPrinter printer in discoveryHandler.DiscoveredPrinters) {
                    Console.WriteLine(printer);
                }
                Console.WriteLine($"Discovered {discoveryHandler.DiscoveredPrinters.Count} Link-OS(TM) printers.");
            });
        };
    }

    private class UsbDiscoveryHandler : DiscoveryHandler {

        public void DiscoveryError(string message) {
            Console.WriteLine($"An error occurred during discovery: {message}.");
            DiscoveryComplete = true;
        }

        public void DiscoveryFinished() {
            DiscoveryComplete = true;
        }

        public void FoundPrinter(DiscoveredPrinter printer) {
            DiscoveredPrinters.Add(printer);
        }

        public bool DiscoveryComplete { get; private set; } = false;

        public List<DiscoveredPrinter> DiscoveredPrinters { get; } = new List<DiscoveredPrinter>();
    }
}