Data passed to another page with SQL Server compact in WP8

Question

I have passed my data to another page but the output is not the one i wanted. It displayed PhoneApp.ToDoList instead of the specific data. Below is my code:

MainPage.xaml.cs

    private void MainLongListSelector_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {

        // If selected item is null (no selection) do nothing
        if (MLongListSelector.SelectedItem == null)
            return;

        var select_Item = MLongListSelector.SelectedItem;
        NavigationService.Navigate(new Uri("/ToDoDetailPage.xaml?Select_Item=" + select_Item, UriKind.Relative));


        // Navigate to the new page
        //NavigationService.Navigate(new Uri("/ToDoDetailPage.xaml", UriKind.Relative));

        // Reset selected item to null (no selection)
        MLongListSelector.SelectedItem = null;
    }

Retrieved on ToDoDetailPage.xaml.cs

protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
    {
        base.OnNavigatedTo(e);

        if (NavigationContext.QueryString.ContainsKey("Select_Item")) 
        { 
            Title.Text = NavigationContext.QueryString["Select_Item"]; 
        }


    }

Here is the image for the breakpoint of var select_Item = MLongListSelector.SelectedItem; in MainPage.xaml.cs

Answer 1

I think the problem is your selected_Item. Because in navigation URL, it is passed as string. So you should pass the param you need,like (selected_Item as someClass).someProperty