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Defines the abstract base class for composable parts, which import objects and produce exported objects.
Assembly: System.ComponentModel.Composition (in System.ComponentModel.Composition.dll)
Windows 7, Windows Vista, Windows XP SP2, 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.