全景图SelectionChanged并不总是触发

Question

I have a panorma control with three items. I want to show an application bar on one of the items and hide the application bar on others. Now the problem is : the one item on which I want to show the application bar SelectionChanged is not called.

Here is my function:

private void panormaItemChanged(object sender, SelectionChangedEventArgs e)
        {

            if (((Panorama)sender).SelectedIndex == 0)
            {
                ApplicationBar.IsVisible = true;
            }
            else {
                ApplicationBar.IsVisible = false;
            }
        }

Answer 1

i think you have taken event of panormaItemChanged instead of that take PanormaSelectionChanged . It would work.

XAML:

<phone:Panorama Title="my application" SelectionChanged="Panorama_SelectionChanged">

cs:

private void Panorama_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    switch (((Panorama)sender).SelectedIndex)
    {

        case 0: // defines the first PanoramaItem
            ApplicationBar.IsVisible = true;
            break;

        case 1: // second one
            ApplicationBar.IsVisible = false;
            break;

        case 2: // third one
            ApplicationBar.IsVisible = true;
            break;
    }
}

Answer 2

I got the answer:

I had put my PanoramaItem in scrollview thats why it wasn't calling SelectionChanged listener!!