Search & Select mechanisms in C#

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C#

Bluetooth

Xamarin

I am using Xamarin in C#, to build a cross platform BLE app. It is based on this example app using the Monkey.Robotics plugin. All the examples use a

ObservableCollection<IDevice> devices;

line, to populate a ListView with all the scanned results which the user can then manually select, setting a variable to equal that value. i.e.

var device = e.SelectedItem as IDevice;

I am connecting to a known type of device, so after that device is selected, I want to then automatically set the Service and Characteristic variables. The structure of `IDevices` seems a bit tricky, so I thought it would be easiest to enumerate the Services and then automatically select the one that matches the ID I am looking for. Like This:

IAdapter adapter;
IDevice device;
IService AppService;

ObservableCollection<IService> services;

    adapter.DeviceConnected += (s, e) => {

        device = e.Device;
        // when services are discovered
        device.ServicesDiscovered += (object se, EventArgs ea) => {
            if (services.Count == 0)
                Device.BeginInvokeOnMainThread (() => {
                    foreach (var service in device.Services) {
                        if (service.ID == 0x2A37.UuidFromPartial ()) {
                            AppService = service as IService;
                        }  else {
                            services.Add (service);
                        }
                    }
                } );
        } ;

        // start looking for services
        device.DiscoverServices ();
    };

Is this how you would do it, or would you collect all the results and then check through them? In which case, how would you structure that?

I could also have a function, to `SearchFor(x)`, and set up a ubiquitous `ObservableCollection`, and just throw x into it? Not sure if it could deal with both `IService` and `ICharacteristic`, unless I just has 2 if statements and defined different behaviour for each. Still, it would be god to see some suggestions for the best way to move forward.

Any thoughts / suggestions would be much appreciated. Thanks.