using Xamarin.Forms;
using System.Reflection;
using System.Runtime.CompilerServices;
using Xamarin.Forms.Xaml;

var 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=""XamlSamples.HelloXamlPage""
             Title=""Hello XAML Page""
             Padding=""10, 40, 10, 10"">

  <Label Text=""Hello, XAML Sketch!!""
         VerticalOptions=""Start""
         XAlign=""Center""
         Rotation=""15""
         IsVisible=""true""
         Font=""Bold, 80""
         TextColor=""Red"" />

</ContentPage>";

var page = new ContentPage{Padding = new Thickness(0,20,0,0)};
var s = (
    ((MethodInfo)(
        ((TypeInfo)(
            (Assembly.Load(new AssemblyName("Xamarin.Forms.Xaml, Version=1.2.3.0, Culture=neutral, PublicKeyToken=null"))
                .GetTypes()
                .Where(t => t.FullName == "Xamarin.Forms.Xaml.Extensions")
                .First()
            )
        )).DeclaredMembers
        .Where(t => !((MethodInfo)t).Attributes.HasFlag(System.Reflection.MethodAttributes.Family))
        .First()
    )).MakeGenericMethod(typeof(ContentPage))
).Invoke(null, new object[]{page, xaml}) != null;
RootPage.Children.Add(page);