How to use navigation parameter using Listbox SelectedIndex?

Question

I bind an items to a listbox;
here's my code MainPage.xaml.cs;
private void display_SelectionChanged(object sender, SelectionChangedEventArgs e)
Frame.Navigate(typeof(SecondPage), display.SelectedIndex);
In the SecondPage.cs I bind the same items but in different layout;
protected override void OnNavigatedTo(NavigationEventArgs e)
string u = e.Parameter.ToString();
int y = Convert.ToInt32(u);
display1.SelectedIndex = y;
private void Page_Loaded(object sender, RoutedEventArgs e)
Still there's an error..

Answer 1

You are developing on RT. You should download my app(https://code.msdn.microsoft.com/Music-online-and-18b2e6d2/sourcecode?fileId=116978&pathId=1927464242)
and find  the files name is " common" . Inside of files have 
-NavigationHelper.cs
-ObservableDictionary.cs
-RelayCommand.cs
-SuspensionManager.cs
and you add folder to your app.
the first pages:
add this code and Note :
xmlns:common="using:App3.Common"
<Page
x:Class="App3.BlankPage1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App3"
xmlns:common="using:App3.Common"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d" Background="White"
>
and inside of ".cs"
using App3.Common; and   private void lst_singer_SelectionChanged(object sender, SelectionChangedEventArgs e) 
            if(lst_us.SelectedIndex!=-1) 
                //background 
                    try 
                        string value = (lst_us.SelectedItem as Data.Data).name; 
                        this.Frame.Navigate(typeof(BlankPage1), value); 
                    catch (Exception ex) 
                        //txtnotice.Text = ex.Message; 
The second pages:
Next steps.
private NavigationHelper navigationhelper;
private ObservableDictionary deafaultviewmodel = new ObservableDictionary();
public BlankPage1()
this.InitializeComponent();
this.navigationhelper = new NavigationHelper(this);
this.navigationhelper.LoadState += navigationhelper_LoadState;
this.navigationhelper.SaveState += navigationhelper_SaveState;
//pivot
public NavigationHelper NavigationHelper
get { return this.navigationhelper; }
public ObservableDictionary DefaultViewModel
get { return this.deafaultviewmodel; }
protected override void OnNavigatedFrom(NavigationEventArgs e)
this.navigationhelper.OnNavigatedFrom(e);
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached.
/// This parameter is typically used to configure the page.</param>
protected override void OnNavigatedTo(NavigationEventArgs e)
this.navigationhelper.OnNavigatedTo(e);
private void navigationhelper_LoadState(object sender, LoadStateEventArgs e)
// throw new NotImplementedException();
try
string value = e.NavigationParameter as string;
if(!string.IsNullOrWhiteSpace(value))
lst_album.ItemsSource=q.list_album(value);
//get data from front page
else
// txtnotice.Text = "Error: Haven't data on listbox,Please.";
catch (Exception ex)
//dialog = new MessageDialog(ex.Message);
//await dialog.ShowAsync();
// txtnotice.Text = ex.Message;