Change the ListBox to have 3 columns using the Column Count property in the Inspector. Align the ScrollBar so that it is to the right of the ListBox and the same height and change its Allow Live Scrolling property to True (ON). Now on Window1, add two Buttons, a Vertical Scroll Bar and a ListBox. On Window1, add a property that is an array of this class: Data() As ListData The class structure is like this: Class ListData To demonstrate this, start by creating a simple class as a container for data. One way to do this is to use a ScrollBar to track the data the user wants to see and then to only load that data into the ListBox. So why not only load the data they can actually see? This is often a great idea because the user can’t actually see all the data at once anyway. One way to avoid this problem is to not actually load all the data at once. It can take noticeable amount of time to to populate and you end up with your data being duplicated because it exists in both the ListBox and the original source (file, database or other data structure). But the ListBox, being a UI control, is not meant to also be a container for hundreds of thousands of rows of data. The ListBox is a great control for showing users lists of data, even data with lots and lots of rows.
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