When UI Automation queries the root of a Windows Presentation Foundation (WPF) application about an element, the root returns the UI Automation peer for that element. The peer also responds to UI Automation queries about its corresponding element.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.