LifetimeContext.TryGetExport(CompositionContract, Object) Method

Reference

Definition

Namespace:: System.Composition.Hosting.Core

Assembly:: System.Composition.Hosting.dll

Package:: System.Composition.Hosting v9.0.0

Source:: LifetimeContext.cs

Source:: LifetimeContext.cs

Source:: LifetimeContext.cs

Important

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Retrieves a contract instance from the composition context.

public:
 override bool TryGetExport(System::Composition::Hosting::Core::CompositionContract ^ contract, [Runtime::InteropServices::Out] System::Object ^ % export);

public override bool TryGetExport (System.Composition.Hosting.Core.CompositionContract contract, out object export);

override this.TryGetExport : System.Composition.Hosting.Core.CompositionContract * obj -> bool

Public Overrides Function TryGetExport (contract As CompositionContract, ByRef export As Object) As Boolean

Parameters

contract: CompositionContract

The contract.

export: Object

After this method returns, contains the contract instance if available; otherwise, null.

Returns

Boolean

true if the instance was retrieved; otherwise, false.

Exceptions

CompositionFailedException

No export was found for contract.

Applies to

通过