ListViewSelectEventArgs::NewSelectedIndex Property
Gets or sets the index of the new item to select in the ListView control.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
The ListView::SelectedIndexChanging event occurs before the ListView control performs the select operation. Therefore, you cannot use the ListView::SelectedIndex property of the control to determine the index of the new item selected by the user. The ListView::SelectedIndex property contains the index of the previously selected item. To determine the index of the new item that is selected by the user, use the NewSelectedIndex property. You can also use this property to programmatically override the selected item index by setting it to another value.
The following example shows how to use the NewSelectedIndex property of the ListViewSelectEventArgs object to access the item that was selected by the user.
Available since 3.5