protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.WebView> e)
{
base.OnElementChanged(e);
cvw = (CoreWebView)e.NewElement;
cvw.CreatePDF += SavePDFMethod;
NativeView = this.Control;
}
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
cvw = (CoreWebView)e.NewElement;
cvw.CreatePDF += SavePDFMethod;
}