Artikel
11/18/2011

CompositionConstants Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Contains static metadata keys used by the composition system.

Inheritance Hierarchy

System.Object
System.ComponentModel.Composition.Hosting.CompositionConstants

Namespace: System.ComponentModel.Composition.Hosting
Assembly: System.ComponentModel.Composition (in System.ComponentModel.Composition.dll)

Syntax

'Declaration
Public NotInheritable Class CompositionConstants

public static class CompositionConstants

The CompositionConstants type exposes the following members.

Fields

	Name	Description
	ExportTypeIdentityMetadataName	Specifies the key for metadata created by the composition system to mark a part with a unique identifier.
	PartCreationPolicyMetadataName	Specifies the key for metadata created by the composition system to mark a part with a creation policy.

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Remarks

Users should not create metadata by using any of the keys in this class, except to deliberately interact with the composition system. Other uses will cause unpredictable behavior.

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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