25 May 2021 05:19
RichTextBox: RulerThumbType name inconsistency between DependencyProperty and its backing CLR property
The error message: Error XDG0041 The property "RulerThumbType" is not a DependencyProperty. To be used in markup, non-attached properties must be exposed on the target type with an accessible instance property "RulerThumbType". For attached properties, the declaring type must provide static "GetRulerThumbType" and "SetRulerThumbType" methods.