Microsoft.Phone.Controls.ListPickerPage.OnNavigatedFrom C# (CSharp) Метод

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            if (null == e)
            {
                throw new ArgumentNullException("e");
            }

            base.OnNavigatedFrom(e);

            // Save Value if navigating away from application
            if (e.Uri.IsExternalNavigation())
            {
                State[StateKey_Value] = StateKey_Value;
            }
        }