Visual Basic Reference
A DirListBox control displays directories and paths at run time. Use this control to display a hierarchical list of directories. You can create dialog boxes that, for example, enable a user to open a file from a list of files in all available directories.
Set the List, ListCount, and ListIndex properties to enable a user to access items in a list. If you also display the DriveListBox and FileListBox controls, you can write code to synchronize them with the DirListBox control and with each other.