When is the On Parameters Changed Event triggered?

The On Parameters Changed Event is triggered when the parent of the Block changes the value of at least one of the Block Input Parameters. This event is crucial for maintaining synchronization between the parent component and the Block. It allows the Block to react and update its internal logic or UI based on the new values passed from its parent.

In a typical scenario, when a parent component of a Block modifies its input parameters, it signals the Block to potentially alter its behavior or display, ensuring that any changes are immediately reflected. This keeps the user interface dynamic and responsive to user interactions and data changes.

The other choices do not accurately describe when this event is triggered. For instance, while it may seem logical that changing a Block’s internal data would prompt a parameter change detection, it is fundamentally the parent component's modifications that invoke the On Parameters Changed Event.