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Application Constructor

Initializes a new instance of the Application class.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)

public Application()

ExceptionCondition
InvalidOperationException

More than one instance of the Application class is created per AppDomain.

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.

The Application object for the current AppDomain is exposed from the static Current property.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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