public MainWindowViewModel()
{
CloseNewWindowCommand = new RouteCommand(CloseNewWindow);
OpenNewWindowCommand = new RouteCommand(OpenNewWindow);
Bills = new ObservableCollection <BillViewModel>();
MainLogic ml = new MainLogic();
CurrentBill = ml.GetDataFromDataBase();
CurrentDollar = 58.9;
}
public NewWindowViewModel()
{
CloseNewWindowCommand = new RouteCommand(CloseNewWindow);
Bills = new ObservableCollection <BillViewModel>();
_canExecute = true;
}