The Telerik AutoSuggestBox is a text control that makes suggestions to the users as they type text in. When the text updates an event is fired where you can load suggestions into the drop down of the control.
Part of the Telerik UI for WPF suite with 150+ feature rich controls designed to fast-track your desktop app development and ensure consistent design.
The WPF UI suite comes with over 20+ fully customizable, built-in themes, document processing libraries, extensive product documentation and demos as well as industry-leading support.