'Declaration

Protected Overridable ReadOnly Property UseAnnotationRenderer As Boolean

protected virtual bool UseAnnotationRenderer { get; }

protected: __property virtual bool get_UseAnnotationRenderer();

protected:
virtual property bool UseAnnotationRenderer {
   bool get();
}

True - annotation view must use AnnotationRendererFactory to create annotation renderer and use this renderer to draw the annotation;
false - annotation view must use RenderInContentSpace(DrawingContext,WpfDrawingSurface) method to draw the annotation.
Default value is true.