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ExportProvider.GetExportedValue<T> Method (String)

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

Returns the exported object with the specified contract name. If there is not exactly one matching exported object, an exception is thrown.

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

Syntax

'Declaration
Public Function GetExportedValue(Of T) ( _
    contractName As String _
) As T

public T GetExportedValue<T>(
    string contractName
)

Type Parameters

  • T
    The type of the exported object to return.

Parameters

  • contractName
    Type: System.String
    The contract name of the exported object to return, or nulla null reference (Nothing in Visual Basic) or an empty string ("") to use the default contract name.

Return Value

Type: T
The exported object with the specified contract name.

Exceptions

Exception Condition
ImportCardinalityMismatchException

There are zero exported objects with the contract name derived from T in the CompositionContainer.

-or-

There is more than one exported object with the contract name derived from T in the CompositionContainer.
ObjectDisposedException

The CompositionContainer object has been disposed of.
CompositionContractMismatchException

The underlying exported object cannot be cast to T.
CompositionException

An error occurred during composition. Errors will contain a collection of errors that occurred.

Remarks

The contract name is the result of calling the GetContractName method on T.

The contract name is compared by using the Ordinal property to perform a case-sensitive, non-linguistic comparison.

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.