DefaultDependencyAttribute 类

定义

向公共语言运行时 (CLR) 提供提示,指示加载依赖项的可能性。Provides a hint to the common language runtime (CLR) indicating how likely a dependency is to be loaded. 此类用在依赖程序集中,用于指示当父级未指定 DependencyAttribute 特性时应使用的提示。This class is used in a dependent assembly to indicate what hint should be used when the parent does not specify the DependencyAttribute attribute. 此类不能被继承。This class cannot be inherited.

public ref class DefaultDependencyAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Assembly)]
[System.Serializable]
public sealed class DefaultDependencyAttribute : Attribute
type DefaultDependencyAttribute = class
    inherit Attribute
Public NotInheritable Class DefaultDependencyAttribute
Inherits Attribute
继承
DefaultDependencyAttribute
属性

示例

下面的代码示例演示如何将DefaultDependencyAttribute特性应用于程序集, 以指定可能会加载该依赖项。The following code example demonstrates how to apply the DefaultDependencyAttribute attribute to an assembly to specify that the dependency is likely to be loaded.

using System;
using System.Runtime.CompilerServices;

[assembly: DefaultDependencyAttribute(LoadHint.Always)]
class Program
{
    
    static void Main(string[] args)
    {

        Console.WriteLine("The DefaultDependencyAttribute attribute was applied.");

    }
}
Imports System.Runtime.CompilerServices

<Assembly: DefaultDependencyAttribute(LoadHint.Always)> 
Module Program


    Sub Main(ByVal args() As String)
        Console.WriteLine("The DefaultDependencyAttribute attribute was applied.")
    End Sub


End Module

注解

Ngen.exe (本机映像生成器)使用此属性来生成本机程序集映像。This attribute is used by the Ngen.exe (Native Image Generator) to generate native assembly images.

DefaultDependencyAttribute将特性应用于依赖程序集, 以确定首选的默认绑定。Apply the DefaultDependencyAttribute attribute to a dependent assembly to determine the preferred default binding.

可能加载的依赖项 (Always) 将导致 ngen.exe 绑定到该依赖项。A dependency that is likely to be loaded (Always) will cause Ngen.exe to bind to that dependency. 使用此提示, Ngen.exe 允许 Ngen.exe 生成将导致工作集缩减的代码和提升的吞吐量, 但代价是在加载父程序集时始终加载依赖项。Using this hint allows Ngen.exe to generate code that will result in a reduced working set and improved throughput but at the cost of always loading the dependency when the parent assembly is loaded.

如果将DependencyAttribute特性应用于值为的Default程序集, 则本机映像生成服务会向依赖程序集咨询其首选默认绑定, 该绑定由DefaultDependencyAttribute属性指定。When you apply the DependencyAttribute attribute to an assembly with a value of Default, the native image generation service consults the dependent assembly for its preferred default binding, which is specified by the DefaultDependencyAttribute attribute.

构造函数

DefaultDependencyAttribute(LoadHint)

用指定的 DefaultDependencyAttribute 绑定初始化 LoadHint 类的新实例。Initializes a new instance of the DefaultDependencyAttribute class with the specified LoadHint binding.

属性

LoadHint

获取 LoadHint 值,该值指示程序集何时加载依赖项。Gets the LoadHint value that indicates when an assembly loads a dependency.

TypeId

在派生类中实现时,获取此 Attribute 的唯一标识符。When implemented in a derived class, gets a unique identifier for this Attribute.

(继承自 Attribute)

方法

Equals(Object)

返回一个值,该值指示此实例是否与指定的对象相等。Returns a value that indicates whether this instance is equal to a specified object.

(继承自 Attribute)
GetHashCode()

返回此实例的哈希代码。Returns the hash code for this instance.

(继承自 Attribute)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
IsDefaultAttribute()

在派生类中重写时,指示此实例的值是否是派生类的默认值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(继承自 Attribute)
Match(Object)

当在派生类中重写时,返回一个指示此实例是否等于指定对象的值。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(继承自 Attribute)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(继承自 Object)

显式界面实现

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

将一组名称映射为对应的一组调度标识符。Maps a set of names to a corresponding set of dispatch identifiers.

(继承自 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

检索对象的类型信息,然后可以使用该信息获取接口的类型信息。Retrieves the type information for an object, which can be used to get the type information for an interface.

(继承自 Attribute)
_Attribute.GetTypeInfoCount(UInt32)

检索对象提供的类型信息接口的数量(0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(继承自 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供对某一对象公开的属性和方法的访问。Provides access to properties and methods exposed by an object.

(继承自 Attribute)

适用于

另请参阅