For you to create a infinite scroll what you need to do is to have a local variable that will have the number of results to be fetched from the database (start with 20, and then increment to 50, ....).
London theme has a widget for infinite scroll, that when scrolling and getting close to the of the page, an OS notification is raised. http://labs.outsystems.net/londontheme/List_InfiniteScroll.aspx
Additionally you can download the code for that in the london website: http://labs.outsystems.net/londontheme/DownloadEspace.aspx
If you need anything else, let me know.
London theme has a widget for infinite scroll, that when scrolling and getting close to the of the page, an OS notification is raised. http://labs.outsystems.net/londontheme/List_InfiniteScroll.aspx
Additionally you can download the code for that in the london website: http://labs.outsystems.net/londontheme/DownloadEspace.aspx
If you need anything else, let me know.