How to call method in a different namespace from XAML

I am building a desktop application with WPF and w开发者_JS百科ant to open a hyperlink in a browser. I can do this by putting a method in the code behind and calling it from the XAML as follows, but how can I call this method from multiple XAML pages?

XAML

<Hyperlink NavigateUri="http://www.mylink.com" RequestNavigate="Hyperlink_RequestNavigate">My link text</Hyperlink>

C#

private void Hyperlink_RequestNavigate(object sender, System.Windows.Navigation.RequestNavigateEventArgs e)
    {
        System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(e.Uri.AbsoluteUri));
        e.Handled = true;
    }

You could put this into a style in App.xaml, e.g.

<Application.Resources>
    <Style x:Key="LaunchLinkStyle" TargetType="{x:Type Hyperlink}">
        <EventSetter Event="RequestNavigate" Handler="LaunchLinkStyle_RequestNavigate" />
    </Style>
</Application.Resources>

(The handler then of course would be implemented in App.xaml.cs)

You then can just reference the style:

<Hyperlink Style="{StaticResource LaunchLinkStyle}" ... />

Thanks H.B. Your answer set me on the right path. Here's the complete code:

In my page:

<Hyperlink NavigateUri="http://www.mylink.com" Style="{StaticResource LaunchLinkStyle}">My Link</Hyperlink>

App.xaml

<Style x:Key="LaunchLinkStyle" TargetType="{x:Type Hyperlink}">
        <EventSetter Event="RequestNavigate"  Handler="LaunchLinkStyle_RequestNavigate"/>
    </Style>

App.xaml.cs

public void LaunchLinkStyle_RequestNavigate(object sender, RoutedEventArgs e)
    {
        /* Function loads URL in separate browser window. */
        Hyperlink link = e.OriginalSource as Hyperlink;
        Process.Start(link.NavigateUri.AbsoluteUri);
        e.Handled = true; //Set this to true or the hyperlink loads in application and browser windows
    }