After you correct the ItemsSource with the proper value XAML isn't going to routinely reilitialize the gathering of items. I speedily uncovered, certainly, this doens't operate: Python never binds the callable to the object and I need the object in an effort to connect with the purpose. Even generating the https://newlaunchpropertiesnoida.blogspot.com/2025/05/build-your-legacy-with-signature-global.html