How to set rating in WP html5 silverlight app?

Question

Windows phone

The application itself is quite simple.
Made from a C# HTML5 template (WP Silverlight).
I want to add the ability to rate the application (the so-called rating), but I ran into such a problem (considering that I don’t know C# and XAML well):
on the forums they write about using the NUGET AppPromo package, but my project, as Visual Studio writes:
"Error 2 'RateReminder' is not supported in the 'Windows Phone Silverlight' project."
those. there is no possibility in the constructor to transfer the Rateremider element from the toolbar, in fact, I don’t understand how this element can be used at all because it appeared in the list, but is not highlighted (i.e. not active), if you manually write in minepage.xaml: then the above message is issued.
I will be grateful for the help, otherwise I have already spent a lot of time, but there is no sense.
And one more problem that I encountered:
in the appbar if you put an icon, and in minepage.xaml.cs:
private void Star_Click(object sender, EventArgs e) { Browser.Navigate(new Uri(" http://www.windowsphone. com**** ", UriKind.Relative)); }
in emulation, when you click on the icon, an error is generated, the application stops.
Thanks in advance!

Answer 1

Something you don't understand is advised. Take a look here: www.kunal-chowdhury.com/2014/07/whats-new-for-wp8d...

Answer 2

Thank you very much for the answer Vyacheslav!)
I was still able to find a solution
www.itshop.ru/Sovety-po-prodvizheniyu-prilozheniya...
at the end of the article, there is an excellent code example.
Thanks for the link!)