Typically items are sorted using the ListView.Sorting property, which sorts items based on the item text. To customize the sort order, you must write a class that implements the IComparer interface and set the ListView.ListViewItemSorter property to an object of that class. This is useful, for example, when you want to sort items by subitem text. For more information on performing manual sorting of items, see the example for the ListView.ListViewItemSorter property.
If the ListView.Sorting property is set to a value other than SortOrder.None or if the ListView.ListViewItemSorter property is set, the list is sorted automatically when items are added. Items are not sorted automatically when the label text changes.