Which of the following events is triggered only after fetching data?

The "After Fetch" event is specifically designed to be triggered after data has been successfully fetched from a data source. This means that any actions or logic that depend on the availability of this data can be executed at this point. This event is crucial in scenarios where you need to perform additional processes, like populating UI elements or performing calculations, based on the newly retrieved data.

In contrast, other events serve different purposes. The "Render" event occurs when a component is about to be displayed on the screen, making it ideal for initial setup but not necessarily tied to data fetching. The "Ready" event is triggered when the screen or widget is fully initialized and ready for user interaction, which can happen even before data is fetched. Lastly, the "On Parameters Change" event is fired when input parameters to a screen or component change, which is also independent of whether data has been fetched or not.

This distinction highlights the specific functionality of the "After Fetch" event, making it essential for managing data-driven behaviors in applications.