public void Application_Startup(object sender, StartupEventArgs e)
{
_menu = My_Storage.ReadXml <ObservableCollection <Menu> >("MenuList.xml");
if (_menu == null)
{
_menu = new ObservableCollection <Menu>();
}
_order = My_Storage.ReadXml <ObservableCollection <Orders> >("OrderList.xml");
if (_order == null)
{
_order = new ObservableCollection <Orders>();
}
_addItem = My_Storage.ReadXml <ObservableCollection <AddItem> >("AddItem.xml");
if (_addItem == null)
{
_addItem = new ObservableCollection <AddItem>();
}
}
