ExportProvider.GetExport<T> Method (String)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
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)
Syntax
'Declaration
Public Function GetExport(Of T) ( _
contractName As String _
) As Lazy(Of T)
public Lazy<T> GetExport<T>(
string contractName
)
Type Parameters
- T
The type of the Export<T> object to return.
Parameters
- contractName
Type: System.String
The contract name of the Export<T> object to return, or nulla null reference (Nothing in Visual Basic) or an empty string ("") to use the default contract name.
Return Value
Type: System.Lazy<T>
The export with the specified contract name.
Exceptions
| Exception | Condition |
|---|---|
| ImportCardinalityMismatchException | There are zero Export<T> objects with the contract name derived from T in the CompositionContainer object. -or- There is more than one Export<T> object with the contract name derived from T in the CompositionContainer object. |
| ObjectDisposedException | The CompositionContainer object has been disposed of. |
Remarks
The returned Export<T> object is an instance of Export<T, TMetadataView> underneath, where TMetadataView is IDictionary<TKey, TValue>, TKey is String, and TValue is Object.
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.