private static object GetDefaultAnchor(ITypeDescriptorContext context)
{
// If the target is not a control, so we need to find an anchor that will let us look
// up named controls and style resources. First look for the closest IControl in
// the context.
object anchor = context.GetFirstAmbientValue <IControl>();
// If a control was not found, then try to find the highest-level style as the XAML
// file could be a XAML file containing only styles.
return(anchor ??
context.GetService <IRootObjectProvider>()?.RootObject as IStyle ??
context.GetLastOrDefaultAmbientValue <IStyle>());
}
