xamarin.forms - Xamarin Forms ContentPage background image tiling -

im trying set contentspage backgroundimage on large screened devices image keeps tiling.

does here know how stop images tiling?

edited

here image of whats happening on ipads.

this looks on phone:

mainpage.cs

namespace application.views {     public partial class mainpage : contentpage     {         registerdevice registerdevice;         menuanimations menuanimations;          private double width;          public mainpage()         {             initializecomponent();              registerdevice = new registerdevice();             menuanimations = new menuanimations();              toolbaritems.add(new toolbaritem             {                 icon = "menubtn.png",                 order = toolbaritemorder.primary             });         }          protected override void onsizeallocated(double width, double height)         {               backgroundimage = "bg_portrait.png";         }     } } 

mainpage.xaml

<?xml version="1.0" encoding="utf-8" ?> <contentpage xmlns="http://xamarin.com/schemas/2014/forms"              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"              x:class="application.views.mainpage">   <contentpage.content>   </contentpage.content> </contentpage> 

in respect backgroundimage property of type string i'm not able use properties of <image>, aspect instance. better in xaml:

<contentpage xmlns="http://xamarin.com/schemas/2014/forms"          xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"          x:class="superforms.samples.page1">   <contentview>     <image source="https://i.stack.imgur.com/ajyco.png"            aspect="aspectfill"/>   </contentview> </contentpage>