Date Picker Custom Renderer replacing Control

DatePickerCustomRenderer.cs

using System;
using Xamarin.Forms.Platform.iOS;
using Xamarin.Forms;
using TestiOSCutCopyPasteDisable.iOS;
using UIKit;
using Foundation;
using CoreGraphics;
using System.Security.AccessControl;

[assembly: ExportRenderer (typeof(DatePicker), typeof(DatePickerCustomRenderer))]
namespace TestiOSCutCopyPasteDisable.iOS
{
	public class DatePickerCustomRenderer : DatePickerRenderer
	{
		CustomTextField newTextField;

		public DatePickerCustomRenderer ()
		{
		}

		protected override void OnElementChanged (ElementChangedEventArgs<DatePicker> e)
		{
			base.OnElementChanged (e);
			if (Control != null) {
				// do whatever you want to the UITextField here!
				newTextField = new CustomTextField (Control.Frame);
				newTextField.Text = Control.Text;
				newTextField.Delegate = Control.Delegate;
				newTextField.AddConstraints (Control.Constraints);
				newTextField.InputView = Control.InputView;

				var toolbar = (UIToolbar)Control.InputAccessoryView;
				toolbar.Items [1].Clicked += (object sender, EventArgs evt) => {
					newTextField.ResignFirstResponder ();
				};

				newTextField.InputAccessoryView = Control.InputAccessoryView;

				SetNativeControl (newTextField);
//				Control.ShouldChangeCharacters = ShouldChangeCharacters;
			}
		}
			
//		public bool ShouldChangeCharacters(UITextField textField, NSRange range, string replacementString)
//		{
//			return false;
//		}


	}

	public class CustomTextField : UITextField
	{
		public CustomTextField(CGRect frame) : base(frame)
		{
			
		}

		public override bool CanPerform (ObjCRuntime.Selector action, NSObject withSender)
		{
			return false;
		}
	}

}