async void OnRefresh() { // Turn on network indicator this.IsBusy = true; HomeView.ItemsSource = jobs; try { var jobCollection = await entmanager.GetJobs(enterprise.Username); foreach (Job job in jobCollection) { if (jobs.All(b => b.Id != job.Id)) { //await DisplayAlert("Login", job.Title , "Cancel"); jobs.Add(job); } } } finally { this.IsBusy = false; } }