Which of the following is necessary for Ajax Refresh to work on a widget?

For Ajax Refresh to function effectively on a widget, it is essential that the widget has a Name and that the Screen Action is executed with Ajax Submit. The Name property is crucial because it serves as an identifier for the widget that will be refreshed. The Ajax Submit method is necessary because it allows the web application to execute server-side logic without requiring a full page refresh, ensuring a smoother user experience by only updating the designated parts of the UI.

By using Ajax Submit, the application can send data to the server and receive updated content back, which can then be applied to the specific widget identified by its Name. This targeted updating is the key feature of Ajax Refresh, making it faster and more dynamic compared to other methods, which may impact more components or lead to full page reloads.

While a Table Records widget is often associated with Ajax Refresh, it is not mandatory for all situations, and other widgets can also utilize this feature as long as they are named accordingly. Therefore, having a widget name and employing Ajax Submit is the fundamental requirement for enabling the Ajax Refresh functionality effectively.