Xamarin.Forms / C# — Custom modal page transition for iOS via setting the ModalTransitionStyle property

MyPageRenderer.cs

// MyPageRenderer.cs
//
// No Rights Reserved
// http://creativecommons.org/publicdomain/zero/1.0/
//
// Define custom Xamarin.Forms renderer for iOS platform
// for page you want to show as modal. View controller
// for the page is wrapped into internal Xamarin.Forms
// wrapper class and we can access it as parent.
//
using System;
using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;
using UIKit;
using Project.Portable;
using Project.iOS;

[assembly: ExportRenderer (typeof (MyPage), typeof (MyPageRenderer))]

namespace Project.iOS
{
    public class MyPageRenderer : PageRenderer
    {
        public override void DidMoveToParentViewController (UIViewController parent)
        {
            base.DidMoveToParentViewController (parent);

            parent.ModalTransitionStyle = UIModalTransitionStyle.CrossDissolve;
        }
    }
}