项目
11/18/2011

ExportProvider.GetExportsCore Method

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

Gets all the exports that match the constraint defined by the specified definition.

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

Syntax

'Declaration
Protected MustOverride Function GetExportsCore ( _
    definition As ImportDefinition, _
    atomicComposition As AtomicComposition _
) As IEnumerable(Of Export)

protected abstract IEnumerable<Export> GetExportsCore(
    ImportDefinition definition,
    AtomicComposition atomicComposition
)

Parameters

definition
Type: System.ComponentModel.Composition.Primitives.ImportDefinition
The object that defines the conditions of the Export objects to return.

atomicComposition
Type: System.ComponentModel.Composition.Hosting.AtomicComposition
The transactional container for the composition.

Return Value

Type: System.Collections.Generic.IEnumerable<Export>
A collection that contains all the exports that match the specified condition.

Remarks

Overrides of this method should not treat cardinality-related mismatches as errors, and should not throw exceptions in those cases. For example, if Cardinality is ExactlyOne and there are zero Export objects that match the conditions of the specified ImportDefinition, an empty IEnumerable<T> collection should be returned.

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.

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