private static void DoUserInitiatedNavigation(object sender)
        {
            CodeAccessPermission codeAccessPermission = SecurityHelper.CreateUserInitiatedNavigationPermission();

            codeAccessPermission.Assert();
            try
            {
                Hyperlink.DispatchNavigation(sender);
            }
            finally
            {
                CodeAccessPermission.RevertAssert();
            }
        }
 private static void DoNonUserInitiatedNavigation(object sender)
 {
     Hyperlink.CacheNavigateUri((DependencyObject)sender, null);
     Hyperlink.DispatchNavigation(sender);
 }