TypeIdentifierAttribute 类

定义

为类型等效提供支持。Provides support for type equivalence.

public ref class TypeIdentifierAttribute sealed : Attribute
[System.Runtime.InteropServices.ComVisible(false)]
[System.AttributeUsage(System.AttributeTargets.Delegate | System.AttributeTargets.Enum | System.AttributeTargets.Interface | System.AttributeTargets.Struct, AllowMultiple=false, Inherited=false)]
public sealed class TypeIdentifierAttribute : Attribute
type TypeIdentifierAttribute = class
    inherit Attribute
Public NotInheritable Class TypeIdentifierAttribute
Inherits Attribute
继承
TypeIdentifierAttribute
属性

注解

TypeIdentifierAttribute 属性主要由编译器发出。The TypeIdentifierAttribute attribute is primarily emitted by compilers. 它有两个用途:It serves two purposes:

  • 对于所有导入的类型,它指示类型用于类型等效性。For all imported types, it indicates that the type is intended to be used for type equivalence.

  • 对于其类型库中没有 Guid 的类型,它具有一个采用两个字符串的构造函数(scopeidentifier)。For types that don't have GUIDs in their type library, it has a constructor that takes two strings (scope and identifier). 它们合并为一个 GUID,并成为用于类型等效性的键。These are combined into a GUID and become the key that is used for type equivalence.

Type.IsEquivalentTo 主题中讨论了类型等效性。Type equivalence is discussed in the Type.IsEquivalentTo topic.

构造函数

TypeIdentifierAttribute()

创建 TypeIdentifierAttribute 类的新实例。Creates a new instance of the TypeIdentifierAttribute class.

TypeIdentifierAttribute(String, String)

用指定的范围和标识符创建 TypeIdentifierAttribute 类的新实例。Creates a new instance of the TypeIdentifierAttribute class with the specified scope and identifier.

属性

Identifier

获取传递给 identifier 构造函数的 TypeIdentifierAttribute(String, String) 参数的值。Gets the value of the identifier parameter that was passed to the TypeIdentifierAttribute(String, String) constructor.

Scope

获取传递给 scope 构造函数的 TypeIdentifierAttribute(String, String) 参数的值。Gets the value of the scope parameter that was passed to the TypeIdentifierAttribute(String, String) constructor.

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()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)

显式接口实现

_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