Silverlight Page Titles

In the past I would use part of the page for the page title while the MainPage had a lot of empty space in the center.  I wanted to move the title from the page to the MainPage as shown below.

To do this I first made a property on MainPage like this:

public partial class MainPage : UserControl
{
    public string Title
    {
        get { return tbTitle.Text; }
        set { tbTitle.Text = value; }
    }

…

Then I added this property to the App class:

public partial class App : Application
{
    public static string Title
    {
        set
        {
            MainPage mp = App.GetMainPage();
            mp.Title = value;
        }
    }

A supporting method in this same App class is GetMainPage() where it gets the MainPage. I use this for other things too.

public static MainPage GetMainPage()
{
    if (Application.Current.RootVisual.GetType().Name == "BusyIndicator")
        return (MainPage)((ChangeAlerts.Controls.BusyIndicator)
            Application.Current.RootVisual).Content;
    else
        return (MainPage)Application.Current.RootVisual;
}

Then on each individual page I have something like this:

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    App.Title = "Manage Accounts";
}