private void _navigationViewModel_StatusUpdated() { HajjListView.ItemsSource = _navigationViewModel.ListOfHajj; var StatusT = _navigationViewModel.ListOfHajj.Where(x => x.Status == 1).AsEnumerable(); var StatusF = _navigationViewModel.ListOfHajj.Where(x => x.Status == 0).AsEnumerable(); lbltotla.Text = StatusT.Count().ToString(); lblmissing.Text = StatusF.Count().ToString(); _navigationViewModel.StopTracking(); }