Gets a value that indicates whether the window is active. This is a dependency property.
Assembly: PresentationFramework (in PresentationFramework.dll)
An active window is the user's current foreground window and has the focus, which is signified by the active appearance of the title bar. An active window will also be the top-most of all top-level windows that don't explicitly set the Topmost property.
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.