private void AppointmentPage_Loaded(object sender, RoutedEventArgs e)
{
if (!viewModel.IsDataLoaded)
{
viewModel.LoadData();
}
}
public AppointmentPage()
{
this.InitializeComponent();
viewModel = new AppointmentViewModel();
if (!viewModel.IsDataLoaded)
{
viewModel.LoadData();
}
DataContext = viewModel;
this.Loaded += new RoutedEventHandler(AppointmentPage_Loaded);
}