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ExportProvider.GetExport<T, TMetadataView> Method (String)

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

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

public Lazy<T, TMetadataView> GetExport<T, TMetadataView>(
	string contractName
)

Type Parameters

T

The type parameter of the Lazy<T, TMetadata> object to return.

TMetadataView

The type of the metadata view of the Lazy<T, TMetadata> object to return.

Parameters

contractName
Type: System.String

The contract name of the Lazy<T, TMetadata> object to return, or null or an empty string ("") to use the default contract name.

Return Value

Type: System.Lazy<T, TMetadataView>
The export with the specified contract name.

ExceptionCondition
ImportCardinalityMismatchException

There are zero Lazy<T, TMetadata> objects with the contract name derived from T in the CompositionContainer object.

-or-

There is more than one Lazy<T, TMetadata> object with the contract name derived from T in the CompositionContainer object.

ObjectDisposedException

The CompositionContainer object has been disposed of.

InvalidOperationException

TMetadataView is not a valid metadata view type.

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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