This item was deprecated in version 2019r2. Please use DesktopListBox.RowDepthAt as a replacement.
For hierarchical ListBoxes, this is the depth of the specified row in the hierarchy. A top-level row has RowDepth = 0.
Get depth of selected row:
Dim row As Integer = ListBox1.ListIndex
Dim depth As Integer = ListBox1.RowDepth(row)
All projects types on all supported operating systems.