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

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

            base.OnNavigatedTo(e);

            // Restore Value if returning to application (to avoid inconsistent state)
            if (State.ContainsKey(StateKey_Value))
            {
                State.Remove(StateKey_Value);

                // Back out from picker page for consistency with behavior of core pickers in this scenario
                if (NavigationService.CanGoBack)
                {
                    NavigationService.GoBack();
                    return;
                }
            }

            // Automatically uppercase the text for the header.
            if (null != HeaderText)
            {
                HeaderTitle.Text = HeaderText.ToUpper(CultureInfo.CurrentCulture);
            }

            Picker.DataContext = Items;

            Picker.SelectionMode = SelectionMode;

            if (null != FullModeItemTemplate)
            {
                Picker.ItemTemplate = FullModeItemTemplate;
            }

            if (SelectionMode == SelectionMode.Single)
            {
                ApplicationBar.IsVisible = false;

                Picker.SelectedItem = SelectedItem;
            }
            else
            {
                ApplicationBar.IsVisible = true;
                Picker.ItemContainerStyle = (Style)Resources["ListBoxItemCheckedStyle"];

                foreach (object item in Items)
                {
                    if (null != SelectedItems && SelectedItems.Contains(item))
                    {
                        Picker.SelectedItems.Add(item);
                    }
                }
            }
        }