DependencyAccessor.TryResolveOptionalDependency 方法

参考

定义

命名空间:: System.Composition.Hosting.Core

程序集:: System.Composition.Hosting.dll

包:: System.Composition.Hosting v6.0.0

包:: System.Composition.Hosting v7.0.0

包:: System.Composition.Hosting v8.0.0

包:: System.Composition.Hosting v9.0.0-preview.2.24128.5

Source:: DependencyAccessor.cs

Source:: DependencyAccessor.cs

Source:: DependencyAccessor.cs

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

在协定的某个实现上解析某个可选的依赖项。

public:
 bool TryResolveOptionalDependency(System::Object ^ site, System::Composition::Hosting::Core::CompositionContract ^ contract, bool isPrerequisite, [Runtime::InteropServices::Out] System::Composition::Hosting::Core::CompositionDependency ^ % dependency);

public bool TryResolveOptionalDependency (object site, System.Composition.Hosting.Core.CompositionContract contract, bool isPrerequisite, out System.Composition.Hosting.Core.CompositionDependency dependency);

member this.TryResolveOptionalDependency : obj * System.Composition.Hosting.Core.CompositionContract * bool * CompositionDependency -> bool

Public Function TryResolveOptionalDependency (site As Object, contract As CompositionContract, isPrerequisite As Boolean, ByRef dependency As CompositionDependency) As Boolean

参数

site: Object

描述依赖项站点的标记。

contract: CompositionContract

网站所需的协定。

isPrerequisite: Boolean

如果要指示在可执行导出前必须满足依赖项，则为 true；否则为 false。

dependency: CompositionDependency

此方法返回后，将包含解析的依赖项或 null。

返回

Boolean

如果已解析该依赖项，则为 true；否则为 false。

适用于