Implementing the OpenEdge GUI for .NET in your application

To implement the UI in your application, you write ABL code that instantiates the classes in which the visual containers are defined.

You can add application logic to the class files generated by the Visual Designer where it suits your purposes to do so. In general, however, it is good practice to write separate procedures that are called by UI events. This use of separate layers for business logic and UI can make it easier to maintain and reuse your application code.