You can use scroll bar controls to add custom scroll bars to a control with scrollable data. Complete the following steps to use a scroll bar control with a listbox.

1. Add a listbox to the front panel and enter items in the listbox.
2. Add a vertical scroll bar to the front panel.
3. Right-click the listbox, select Create»Property Node»Top Row from the shortcut menu, and add the Top Row property to the block diagram.
4. Right-click the Top Row property and select Change All To Write from the shortcut menu.
5. Wire the scroll bar terminal to the Top Row property.
6. Customize the scroll bar by right-clicking the front panel scroll bar, selecting Data Entry from the shortcut menu, and configuring options on the Data Entry page.
7. Click the Run Continuously button and change the value of the scroll bar control to scroll the items in the listbox.

You also can use the Scrollbar properties to configure the scroll bar programmatically.