private static List <Device> Discover(AsqFilter filter, int discoveryTimeInSec)
{
Console.WriteLine($"Start discovering devices for {discoveryTimeInSec} seconds");
if (discoveryTimeInSec < 0)
{
throw new Exception("Discovery time is less than 0");
}
var devices = new List <Device>();
var watcherStopped = new AutoResetEvent(false);
var watcher = CreateWatcher(filter, devices, watcherStopped);
watcher.Start();
Thread.Sleep(discoveryTimeInSec * 1000);
watcher.Stop();
watcherStopped.WaitOne(5 * 1000);
return(devices);
}
private static DeviceWatcher CreateWatcher(AsqFilter filter, List <Device> devices, AutoResetEvent stoppedEvent)
{
var watcher =
DeviceInformation.CreateWatcher(filter.Query, null, DeviceInformationKind.AssociationEndpoint);
watcher.Added += (s, info) => { devices.Add(new Device(info)); };
watcher.Removed += (s, removedDevice) =>
{
foreach (var device in devices.Where(device => device.Info.Id == removedDevice.Id))
{
devices.Remove(device);
}
};
watcher.Updated += (s, updatedDevice) =>
{
foreach (var device in devices.Where(device => device.Info.Id == updatedDevice.Id))
{
device.Info.Update(updatedDevice);
}
};
watcher.Stopped += (s, o) => { stoppedEvent.Set(); };
return(watcher);
}
public static List <Device> DiscoverPairedBluetoothDevices(int timeoutInSec)
{
return(Discover(AsqFilter.PairedBluetoothDevicesFilter(), timeoutInSec));
}
