CompositionContract.TryUnwrapMetadataConstraint<T> Method

Definition

Namespace:

System.Composition.Hosting.Core

Assembly:

System.Composition.Runtime.dll

Package:

System.Composition.Runtime v9.0.0-rc.2.24473.5

Source:

CompositionContract.cs

Gets a metadata constraint that has the specified type and name, if it exists.

public:
generic <typename T>
 bool TryUnwrapMetadataConstraint(System::String ^ constraintName, [Runtime::InteropServices::Out] T % constraintValue, [Runtime::InteropServices::Out] System::Composition::Hosting::Core::CompositionContract ^ % remainingContract);

public bool TryUnwrapMetadataConstraint<T> (string constraintName, out T constraintValue, out System.Composition.Hosting.Core.CompositionContract remainingContract);

member this.TryUnwrapMetadataConstraint : string * 'T * CompositionContract -> bool

Public Function TryUnwrapMetadataConstraint(Of T) (constraintName As String, ByRef constraintValue As T, ByRef remainingContract As CompositionContract) As Boolean

Type Parameters

T

The type of the metadata constraint value.

Parameters

constraintName

String

The name of the metadata constraint.

constraintValue

T

When this method returns, contains the value of the constraint if it was found. This parameter is treated as uninitialized.

remainingContract

CompositionContract

When this method returns, holds the contract with the constraint removed, if the constraint was found. This parameter is treated as uninitialized.

Returns

Boolean

true if the constrained metadata item was unwrapped and the value extracted; otherwise, false.