TextSearch.Text Attached Property
Gets or sets the string that identifies an item in a control's collection.
Assembly: PresentationFramework (in PresentationFramework.dll)
This property specifies the text to displayed when an item is selected, and enables the user to select an item by typing the value of this property. As soon as the user types enough of the value to distinguish the item from other items in the selection, the item will be selected. Use this property on an item in a collection.