async void ExitedRegion(object sender, MonitorEventArgs e) { await UpdateDisplay("They went away :("); }
async void DeterminedStateForRegionComplete(object sender, MonitorEventArgs e) { await UpdateDisplay("I have just switched from seeing/not seeing beacons: " + e.State); }
async void EnteredRegion(object sender, MonitorEventArgs e) { await UpdateDisplay("A new beacon just showed up!"); }