Cs0117 c# “resource” does not contain the definition of “paintable”

After I finally managed to set up a custom renderer, I wanted to change the shape of each button in the application. That sounds easy, right?

set up:

Xamarin.forms version 2.3.2.127

Xamarin. Android. Support. * version 23.3.0

My custom renderer:

var btn = this.Control as Android.Widget.Button;
btn.SetBackgroundResource(Resource.Drawable.arrow_button);

Invalid Sign

CS0117  C# 'Resource' does not contain a deFinition for 'Drawable'

How do I resolve this error?

Cheers!

resolvent:

You have used the wrong resource namespace. I must use droid.resource in my project like this:

btn.SetBackgroundResource(Droid.Resource.Drawable.arrow_button);

Otherwise, xamarin does not know which resource you are referring to, so it must be named explicitly