protected override void OnStartup(StartupEventArgs e)
{
HandleCulture(e);
_exHandler = ExceptionHandler.GetInstance();
this.DispatcherUnhandledException +=
new DispatcherUnhandledExceptionEventHandler(App_DispatcherUnhandledException);
_exHandler.ExceptionOccured += new ExceptionOccuredDelegate(_exHandler_ExceptionOccured);
base.OnStartup(e);
MainWindow window = new MainWindow();
MainWindowViewModel viewModel = new MainWindowViewModel();
window.DataContext = viewModel;
NavigationService.AttachNavigator(new ApplicationNavigationService(viewModel));
window.Show();
}