Is it possible to show Application bar for one Pivot item only?

In a Windows Phone 7 application I use a Pivot for UI. As one of the items of the Pivot a XAML page is inserted, as:

<Pivot_Item>
<myviews:a_page.xaml/>
</Pivot_Item>

An application bar - a stan开发者_开发知识库dard template - is used within that page only, as the whole Pivot doesn't need it. But this doesn't work. For now I was only able either to activate the bar for the every Pivot item or to use it for a separate non-pivot page.

---

As far as I know - ApplicationBar associated with your Page, but Pivot is just a control on your Page. So, ApplicationBar is assigned for the entire Page regardless of which Pivot tab is shown.

You can do it by defining different application bars in resources section:

<phone:PhoneApplicationPage.Resources> 

    <shell:ApplicationBar x:Key="firstPivotTabApplicationBar" IsVisible="True"> 
        ...
    </shell:ApplicationBar> 

    <shell:ApplicationBar x:Key="secondPivotTabApplicationBar" IsVisible="True"> 
        ...
    </shell:ApplicationBar> 

</phone:PhoneApplicationPage.Resources>

And processing SelectionChanged event in your pivot control:

private void MainPagePivot_SelectionChanged(object sender, SelectionChangedEventArgs e) 
{
    string pivotResource;

    switch (_mainPagePivot.SelectedIndex)
    {
        case 0:
            pivotResource = "firstPivotTabApplicationBar";
            break;

        case 1:
            pivotResource = "secondPivotTabApplicationBar";
            break;

        default:
            throw new ArgumentOutOfRangeException();
    }

    ApplicationBar = (ApplicationBar)Resources[pivotResource]; 
} 

---

The easiest way to do this is simply to handle the Pivot's LoadingPivotItem event.

Assign that PivotItem a name:

<Pivot_Item Name="myPivotItem">
<myviews:a_page.xaml/>
</Pivot_Item>

In the code:

private void pivotMain_LoadingPivotItem(object sender, PivotItemEventArgs e)
{
     if (e.Item == myPivotItem) 
        ApplicationBar.IsVisible = true;
     else
        ApplicationBar.IsVisible = false;  
}

---

Try this...add the following function to your PivotPage's xaml.cs file, and ensure you add the SelectionChanged event to use this function...

private void Pivot_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    switch (((Pivot)sender).SelectedIndex)
        {
            case 0:
                ApplicationBar.IsVisible = true;
                break;

            case 1:
                ApplicationBar.IsVisible = false;
                break;
    }
}

Change the case based on the pivot items you want to show the application bar. Works for me and handles the minimizing of the application bar.

---

While it is possible to load the ApplicationBar only when a specific PivotItem is shown this is non-standard behaviour. As a general rule it's typically not good to surprise the user with non-standard behaviour.

That you're trying to do this suggests that a different architecture for your application may be more appropriate. If you really must do it this way, make sure you understand: the reasons why this generally isn't done; the implications of doing so; what the alternatives are; and why the alternatives aren't appropriate.