ImportedFromTypeLibAttribute ImportedFromTypeLibAttribute ImportedFromTypeLibAttribute ImportedFromTypeLibAttribute Class

Definición

Indica que los tipos definidos en un ensamblado se definieron originalmente en una biblioteca de tipos.Indicates that the types defined within an assembly were originally defined in a type library.

public ref class ImportedFromTypeLibAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Assembly, Inherited=false)]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class ImportedFromTypeLibAttribute : Attribute
type ImportedFromTypeLibAttribute = class
    inherit Attribute
Public NotInheritable Class ImportedFromTypeLibAttribute
Inherits Attribute
Herencia
ImportedFromTypeLibAttributeImportedFromTypeLibAttributeImportedFromTypeLibAttributeImportedFromTypeLibAttribute
Atributos

Ejemplos

using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;

class ClassA
{
private:
   static bool IsCOMAssembly( Assembly^ a )
   {
      array<Object^>^AsmAttributes = a->GetCustomAttributes( ImportedFromTypeLibAttribute::typeid, true );
      if ( AsmAttributes->Length > 0 )
      {
         ImportedFromTypeLibAttribute^ imptlb = dynamic_cast<ImportedFromTypeLibAttribute^>(AsmAttributes[ 0 ]);
         String^ strImportedFrom = imptlb->Value;
         
         // Print out the name of the DLL from which the assembly is imported.
         Console::WriteLine( "Assembly {0} is imported from {1}", a->FullName, strImportedFrom );
         return true;
      }

      // This is not a COM assembly.
      Console::WriteLine( "Assembly {0} is not imported from COM", a->FullName );
      return false;
   }
};
using System;
using System.Reflection;
using System.Runtime.InteropServices;

namespace A
{
	class ClassA
	{
		public static bool IsCOMAssembly( Assembly a )
		{
			object[] AsmAttributes = a.GetCustomAttributes( typeof( ImportedFromTypeLibAttribute ), true );
			if( AsmAttributes.Length > 0 )
			{
				ImportedFromTypeLibAttribute imptlb = ( ImportedFromTypeLibAttribute )AsmAttributes[0];
				string strImportedFrom  = imptlb.Value;
				    
				// Print out the name of the DLL from which the assembly is imported.
				Console.WriteLine( "Assembly " + a.FullName + " is imported from " + strImportedFrom );
			
				return true;
			}  
			// This is not a COM assembly.
			Console.WriteLine( "Assembly " + a.FullName + " is not imported from COM" );
			return false;
		}
	}
}
Imports System
Imports System.Reflection
Imports System.Runtime.InteropServices

Module A
	Public Function IsCOMAssembly(ByVal a As System.Reflection.Assembly) As Boolean

		Dim AsmAttributes As Object() = a.GetCustomAttributes(GetType(ImportedFromTypeLibAttribute), True)
		If AsmAttributes.Length = 1 Then
			Dim imptlb As ImportedFromTypeLibAttribute = AsmAttributes(0)
			Dim strImportedFrom As String = imptlb.Value

			' Print out the name of the DLL from which the assembly is imported.
			Console.WriteLine("Assembly " + a.FullName + " is imported from " + strImportedFrom)

			Return True
		End If

		' This is not a COM assembly.
		Console.WriteLine("Assembly " + a.FullName + " is not imported from COM")

		Return False
	End Function
End Module

Comentarios

Este atributo puede aplicarse a los ensamblados, aunque el Tlbimp.exe (importador de biblioteca) normalmente se aplica automáticamente cuando se una biblioteca de tipos.You can apply this attribute to assemblies, although the Tlbimp.exe (Type Library Importer) typically applies it for you when it a type library.

El uso principal del atributo es capturar el origen inicial de la información de tipo.The primary use of the attribute is to capture the original source of the type information. Por ejemplo, puede importar A.tlb. como un ensamblado de interoperabilidad denominado A.dll y tiene referencia B.dll A.dll del ensamblado.For example, you can import A.tlb as an interop assembly called A.dll and have assembly B.dll reference A.dll. Al exportar B.dll a B.tlb, este atributo hace que las referencias de B.tlb que señalan a A.dll a A.tlb.When you export B.dll to B.tlb, this attribute causes the references in B.tlb that point to A.dll to point instead to A.tlb. No debe confundirse con el ComImportAttribute, que especifica que un tipo individual se implementa en COM.This should not be confused with the ComImportAttribute, which specifies that an individual type is implemented in COM.

Constructores

ImportedFromTypeLibAttribute(String) ImportedFromTypeLibAttribute(String) ImportedFromTypeLibAttribute(String) ImportedFromTypeLibAttribute(String)

Inicializa una nueva instancia de la clase ImportedFromTypeLibAttribute con el nombre del archivo de la biblioteca de tipos original.Initializes a new instance of the ImportedFromTypeLibAttribute class with the name of the original type library file.

Propiedades

TypeId TypeId TypeId TypeId

Cuando se implementa en una clase derivada, obtiene un identificador único para este Attribute.When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)
Value Value Value Value

Obtiene el nombre del archivo de la biblioteca de tipos original.Gets the name of the original type library file.

Métodos

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Devuelve un valor que indica si esta instancia es igual que un objeto especificado.Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Devuelve el código hash de esta instancia.Returns the hash code for this instance.

(Inherited from Attribute)
GetType() GetType() GetType() GetType()

Obtiene el Type de la instancia actual.Gets the Type of the current instance.

(Inherited from Object)
IsDefaultAttribute() IsDefaultAttribute() IsDefaultAttribute() IsDefaultAttribute()

Si se reemplaza en una clase derivada, indica si el valor de esta instancia es el valor predeterminado de la clase derivada.When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)
Match(Object) Match(Object) Match(Object) Match(Object)

Cuando se invalida en una clase derivada, devuelve un valor que indica si esta instancia es igual a un objeto especificado.When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficial del objeto Object actual.Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Devuelve una cadena que representa el objeto actual.Returns a string that represents the current object.

(Inherited from Object)

Implementaciones de interfaz explícitas

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

Asigna un conjunto de nombres a un conjunto correspondiente de identificadores de envío.Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Obtiene la información de tipos de un objeto, que puede utilizarse para obtener la información de tipos de una interfaz.Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32)

Recupera el número de interfaces de información de tipo que proporciona un objeto (0 ó 1).Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Proporciona acceso a las propiedades y los métodos expuestos por un objeto.Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Se aplica a

Consulte también: