Returns the exported object with the contract name derived from the specified type parameter. If there is not exactly one matching exported object, an exception is thrown.
Assembly: System.ComponentModel.Composition (in System.ComponentModel.Composition.dll)
There are zero exported objects with the contract name derived from T in the CompositionContainer.
There is more than one exported object with the contract name derived from T in the CompositionContainer.
The CompositionContainer object has been disposed of.
The underlying exported object cannot be cast to T.
An error occurred during composition. Errors will contain a collection of errors that occurred.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.