private void MenuVm_OrderPlaced(object sender, System.EventArgs e)
{
Window orderWindow = new OrderSummaryWindow();
orderWindow.DataContext = menuVm.OrderSummaryViewModel;
orderWindow.Show();
this.Close();
}
private void BackButton_Click(object sender, RoutedEventArgs e)
{
OrderSummaryWindow orderSummaryWindow = new OrderSummaryWindow();
orderSummaryWindow.DataContext = new OrderSummaryViewModel();
orderSummaryWindow.Show();
this.Close();
}