What occurs during the OnInitialize lifecycle event?

During the OnInitialize lifecycle event, the system performs several essential tasks before any visual components of a Screen or Block are displayed to the user. This event occurs at the very beginning of the lifecycle, making it crucial for setting up any initial states required for the application.

The significance of this point lies in the fact that OnInitialize is specifically designed to prepare the environment for the Screen or Block by establishing foundational elements, such as initializing variables or interface components that will be needed during the lifecycle. It ensures that everything is ready before any rendering actions take place or before any data fetching occurs, which is fundamental for efficient resource management and performance.

In particular, this stage allows developers to configure any necessary parameters, set initial data values, or determine visibility states without affecting user experience since the UI is not yet visible. As a result, OnInitialize acts as a preparatory function, enabling a smooth transition into the rendering phase.

While other options may refer to various aspects of the OutSystems lifecycle, they do not accurately capture the unique function of OnInitialize, which emphasizes its precedence before rendering or data interactions.