Fix orientation for one page in the app : is it possible with Xamarin.Forms?

Hello,

I make an app with one page who need to have a fix orientation (landscape, exactly). I try to fix the orientation for the specific page in Xamarin.Forms (XAML or C#), but it seems to be specific to each platform. I don't know if Xamarin.Forms have a cross-platform option to do it but my searches aren't conclusive.

Can anyone help me?

Thanks in advance.