NuGet Package: DevExpress.Web
A click on an item (letter) will scroll the page to the corresponding group or category.
Forces the control to display only the Group (Category) that corresponds to the selected item (letter). This behavior is implemented through server-side processing, so it requires postbacks to be sent to the server.
Related API Members
The following properties accept/return IndexPanelBehavior values:
Values listed by this enumeration are used to set the IndexPanel.Behavior property’s value.