CarouselPage Android, few questions

Hi guys, I posted another question about aCarouselPage app but unfortunately there was no response. I persevered and managed to fix the things I asked about.

I'm now a bit lost with the CarouselPage. My code in App.GetMainPage is like this:

return new CarouselPage {
                    Children =
                    {
                        new ContentPage {BackgroundImage = "BgImage1"},
                        new ContentPage {BackgroundImage = "BgImage2", Content = new StackLayout {Children = {MainStackLayout}}},
                        new ContentPage {BackgroundImage = "BgImage3"},
                        new ContentPage {BackgroundImage = "BgImage4"},
                        new ContentPage {BackgroundImage = "BgImage5"},
                        new ContentPage {BackgroundImage = "BgImage6"},
                        new ContentPage {BackgroundImage = "BgImage7"},
                        new ContentPage {BackgroundImage = "BgImage8"},
                        new ContentPage {BackgroundImage = "BgImage9"}
                    }
                }

I have omitted MainStackLayout but it contains buttons that act as tabs, when each is clicked the body text changes.

For each ContentPage I need 4 buttons and 4 lots of body content, so for 9 ContentPages I'd need 9 * 8 elements declared in my GetMainPage function. Should I be doing this with XAML instead?

I'm stuck with how exactly I know which ContentPage is currently active. If I knew which page was active I could set the content dynamically and make use of a Dictionary or something.

It just seems wrong to have declare all the elements in the code before intialising the ContentPage, I think it limits what I can then do on each page in terms of event handlers and such as I have no idea which content page is active if coded like above.

I think I need a better example of a CarouselPage, the only one I could find was in FormsGalleryand it is relatively simple.