At compile time DefaultValueAttribute is not going to impact the created IL and it will not be examine to initialize the property to that worth (see DefaultValue attribute isn't dealing with my Auto Property). So your DataContext for "video_length_textbox" is about to alone, and also your IncrementingTextBox class doesn't have https://elancommercialprojectsgurugram.blogspot.com/2025/06/signature-global-plots-farukhnagar.html