Initializes a new instance of the Application class.
Assembly: PresentationFramework (in PresentationFramework.dll)
Only one instance of the Application class can be created per AppDomain, to ensure shared access to a single set of application-scope window, property, and resource data. Consequently, the default constructor of the Application class detects whether the instance being initialized is the first instance in an AppDomain; if it is not, an InvalidOperationException is thrown.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003