Difference Listindex and Tab index?
LIST INDEX:: Returns or sets theindex of the currently selected item in the control. Not available at design time.Default LIST INDEX IS -1 for ComboBox, DirListBox, and DriveListBox controls TAB INDEX:: Returns or sets thetab order of most objects within their parent form. Visual Basic automatically renumbers the TabIndex of other controls to reflect insertions and deletions. You can make changes atdesign time using theProperties window or atrun time in code.The TabIndex property isn’t affected by the ZOrder method.