An attribute denotes a Portion of an combination object, and so is utilized all through Evaluation and also layout to precise a singular property of the class So your DataContext for "video_length_textbox" is ready to by itself, and your IncrementingTextBox class doesn't have a general public property called ConfigurationModel Even https://luxuryprojectsyamunaexpressway.blogspot.com/2025/05/invest-in-lifestyle-and-location-with.html