#974 – Properties for Retrieving Selected Items in a ListBox

You can use the following properties to find out which items in a ListBox are selected:

• If a single item is selected:
  • SelectedIndex is the 0-based index of the selected item
  • SelectedItem refers to the selected item
  • SelectedItems is a list containing the single selected item
• If multiple items are selected:
  • SelectedIndex is the 0-based index of the first item that the user selected
  • SelectedItem refers to the first item that the user selected
  • SelectedItems is a list containing all selected items
• If no items in the ListBox are selected:
  • SelectedIndex is -1
  • SelectedItem is null
  • SelectedItems is null