protected override void OnNavigatedFrom(NavigationEventArgs e)
{
Window.Current.CoreWindow.KeyDown -= CoreWindowKeyDown;
SaleSummaryVM.PrintReceiptEvent -= PrintReceipt;
App.AppServiceConnected -= PrintReceipt_AppServiceConnected;
_msrService.Stop();
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
Window.Current.CoreWindow.KeyDown -= CoreWindowKeyDown;
Loaded -= OnLoaded;
_msrService.Stop();
}
private void DetachEvents()
{
Window.Current.CoreWindow.KeyDown -= CoreWindowKeyDown;
amount.KeyUp -= AmountKeyUp;
CustomersList.SelectionChanged -= CustomersListSelectionChanged;
this.Loaded -= OnLoaded;
_msrService.Stop();
}
protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
base.OnNavigatingFrom(e);
Window.Current.CoreWindow.KeyDown -= CoreWindowKeyDown;
_msrService.Stop();
}