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Application Constructor

Initializes a new instance of the Application class.

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

public Application()
You cannot use constructors in XAML.

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.

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.

.NET Framework

Supported in: 3.5, 3.0

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