protected override void OnElementChanged(ElementChangedEventArgs <Page> e)
{
base.OnElementChanged(e);
page = e.NewElement as authtest4Page;
var activity = this.Context as Activity;
page.platformParameters = new PlatformParameters(activity);
}
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
page = e.NewElement as authtest4Page;
}