Any time you proper the ItemsSource with the proper worth XAML would not routinely reilitialize the collection of things. @Kent points out that Properties usually are not necessary to encapsulate fields, they may do a calculation on other fields, or provide other needs. 1970s sci-fi guide about an alien invasion https://gurgaonbestproperties.science.blog/2025/07/11/ganga-realty-liv-89-crafted-for-calm-built-for-life/