How to Custom Paint in the TextBox of an WUP - XAML - C# Project

Question

I have just started onto C# & Windows Universal Apps. I just can't seem to find a way to Override the onPaint or onRender of the TextBox . Is it that XAML - WUP just supports styles or is there some problem in my syntax.

using Windows.UI.Xaml.Controls;

namespace GotIt
{
    class CutomText : TextBox
    {

        protected override onRender ... Gives no suitable method found

        protected override onPaint...Gives no suitable method found
    }
}

Answer 1

I am getting the job done using Win2D . Great Package Indeed .

Screenshot 1

Screenshot 2

Thanks Grace . Yaba Daba Doo .