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GetExportedValue(T) Method (String)
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ExportProvider.GetExportedValue(T) Method (String)

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)

member GetExportedValue : 
        contractName:string -> 'T 

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 a 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.

ExceptionCondition
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.

The default 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.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library
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