Is there any way to inherit a class from SelectableTextBlock?

[kuiperzone]

The SelectableTextBlock class is not sealed and has protected methods. So presumably it is permissible to inherit from it?

However, this does not work...

public class AvTextBlock2 : SelectableTextBlock

The text remains unresponsive to selection.

Any way to resolve this?

[stevemonaco]

If you check DevTools, the selection is actually being made. Even though SelectableTextBlock is a primitive control that handles its own rendering, it still requires some extra help. The SelectionBrush is null by default unless you set it. So you can either write a new style, set it explicitly, or use StyleKeyOverride so your theme will do the work. eg.

public class AvTextBlock2 : SelectableTextBlock
{
    protected override Type StyleKeyOverride => typeof(SelectableTextBlock);
}

[kuiperzone]

Working now. Thank you!