public override void OnProgramShutdownStarted(object sender, EventArgs e)
{
MenuViewModel.SaveData();
ShoppingViewModel.SaveData();
RecipiesViewModel.SaveData();
FoodStoreViewModel.SaveData();
mealService.Save();
MenuViewModel.Dispose();
ShoppingViewModel.Dispose();
RecipiesViewModel.Dispose();
FoodStoreViewModel.Dispose();
mealService.Dispose();
}
