ObjectHandle Clase

Definición

Encapsula las referencias de objetos calculadas por valor. De este modo, se pueden devolver a través de un direccionamiento indirecto.

public ref class ObjectHandle : MarshalByRefObject
public ref class ObjectHandle : MarshalByRefObject, System::Runtime::Remoting::IObjectHandle
public class ObjectHandle : MarshalByRefObject
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]
public class ObjectHandle : MarshalByRefObject, System.Runtime.Remoting.IObjectHandle
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]
[System.Runtime.InteropServices.ComVisible(true)]
public class ObjectHandle : MarshalByRefObject, System.Runtime.Remoting.IObjectHandle
type ObjectHandle = class
    inherit MarshalByRefObject
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)>]
type ObjectHandle = class
    inherit MarshalByRefObject
    interface IObjectHandle
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type ObjectHandle = class
    inherit MarshalByRefObject
    interface IObjectHandle
Public Class ObjectHandle
Inherits MarshalByRefObject
Public Class ObjectHandle
Inherits MarshalByRefObject
Implements IObjectHandle
Herencia
ObjectHandle
Atributos
Implementaciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo crear un objeto en otro AppDomainy recuperar un proxy al objeto de un ObjectHandleobjeto . En este ejemplo, puede suponer que el código de la MyType clase se compila en un ensamblado denominado "ObjectHandleAssembly".

using namespace System;
using namespace System::Runtime::Remoting;
public ref class MyType: public MarshalByRefObject
{
public:
   MyType()
   {
      Console::Write( "Created an instance of MyType in an AppDomain with the " );
      Console::WriteLine( "hash code {0}", AppDomain::CurrentDomain->GetHashCode() );
      Console::WriteLine( "" );
   }

   int GetAppDomainHashCode()
   {
      return AppDomain::CurrentDomain->GetHashCode();
   }

};

int main()
{
   Console::WriteLine( "The hash code of the default AppDomain is {0}.", AppDomain::CurrentDomain->GetHashCode() );
   Console::WriteLine( "" );
   
   // Creates another AppDomain.
   AppDomain^ domain = AppDomain::CreateDomain( "AnotherDomain", nullptr, (AppDomainSetup^)nullptr );
   
   // Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
   ObjectHandle^ obj = domain->CreateInstance( "ObjectHandleAssembly", "MyType" );
   
   // Unwraps the proxy to the MyType object created in the other AppDomain.
   MyType^ testObj = dynamic_cast<MyType^>(obj->Unwrap());
   if ( RemotingServices::IsTransparentProxy( testObj ) )
      Console::WriteLine( "The unwrapped object is a proxy." );
   else
      Console::WriteLine( "The unwrapped object is not a proxy!" );

   Console::WriteLine( "" );
   Console::Write( "Calling a method on the object located in an AppDomain with the hash code " );
   Console::WriteLine( testObj->GetAppDomainHashCode() );
   
}
using System;
using System.Runtime.Remoting;

public class MyType : MarshalByRefObject {

   public MyType()  {
      Console.Write("Created an instance of MyType in an AppDomain with the ");
      Console.WriteLine("hash code {0}",AppDomain.CurrentDomain.GetHashCode());
      Console.WriteLine("");
   }

   public int GetAppDomainHashCode() {
      return AppDomain.CurrentDomain.GetHashCode();
   }
}

class Test {

   public static void Main() {

      Console.WriteLine("The hash code of the default AppDomain is {0}.",
                        AppDomain.CurrentDomain.GetHashCode());
      Console.WriteLine("");

      // Creates another AppDomain.
      AppDomain domain = AppDomain.CreateDomain("AnotherDomain",
                                                null,
                                                (AppDomainSetup)null);

      // Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
      ObjectHandle obj = domain.CreateInstance("ObjectHandleAssembly", "MyType");

      // Unwrapps the proxy to the MyType object created in the other AppDomain.
      MyType testObj = (MyType)obj.Unwrap();

      if(RemotingServices.IsTransparentProxy(testObj))
         Console.WriteLine("The unwrapped object is a proxy.");
      else
         Console.WriteLine("The unwrapped object is not a proxy!");

      Console.WriteLine("");
      Console.Write("Calling a method on the object located in an AppDomain with the hash code ");
      Console.WriteLine(testObj.GetAppDomainHashCode());
   }
}
Imports System.Runtime.Remoting


Public Class MyType
   Inherits MarshalByRefObject
      
   Public Sub New()
      Console.Write("Created an instance of MyType in an AppDomain with the ")
      Console.WriteLine("hashcode {0}", AppDomain.CurrentDomain.GetHashCode())
      Console.WriteLine("")
   End Sub
   
   
   Public Function GetAppDomainHashCode() As Integer
      Return AppDomain.CurrentDomain.GetHashCode()
   End Function 'GetAppDomainHashCode

End Class


Class Test
     
   Public Shared Sub Main()
      
      Console.WriteLine("The hash code of the default AppDomain is {0}.", AppDomain.CurrentDomain.GetHashCode())
      Console.WriteLine("")
      
      ' Creates another AppDomain.
      Dim domain As AppDomain = AppDomain.CreateDomain("AnotherDomain", Nothing, CType(Nothing, AppDomainSetup))
      
      ' Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
      Dim obj As ObjectHandle = domain.CreateInstance("ObjectHandleAssembly", "MyType")
      
      ' Unwrapps the proxy to the MyType object created in the other AppDomain.
      Dim testObj As MyType = CType(obj.Unwrap(), MyType)
      
      If RemotingServices.IsTransparentProxy(testObj) Then
         Console.WriteLine("The unwrapped object is a proxy.")
      Else
         Console.WriteLine("The unwrapped object is not a proxy!")
      End If 
      Console.WriteLine("")
      Console.Write("Calling a method on the object located in an AppDomain with the hash code ")
      Console.WriteLine(testObj.GetAppDomainHashCode())

   End Sub

End Class

Comentarios

La ObjectHandle clase se usa para pasar un objeto (en un estado ajustado) entre varios dominios de aplicación sin cargar los metadatos para el objeto ajustado en cada uno de los ObjectHandleAppDomain cuales viaja. Por lo tanto, la ObjectHandle clase proporciona al autor de la llamada el control de cuándo se carga el Type objeto remoto en un dominio.

Constructores

ObjectHandle(Object)

Inicializa una nueva instancia de la clase ObjectHandle que ajusta el o del objeto proporcionado.

Métodos

CreateObjRef(Type)

Crea un objeto que contiene toda la información relevante necesaria para generar un proxy utilizado para comunicarse con un objeto remoto.

(Heredado de MarshalByRefObject)
Equals(Object)

Determina si el objeto especificado es igual que el objeto actual.

(Heredado de Object)
GetHashCode()

Sirve como la función hash predeterminada.

(Heredado de Object)
GetLifetimeService()
Obsoletos.

Recupera el objeto de servicio de duración actual que controla la directiva de duración de esta instancia.

(Heredado de MarshalByRefObject)
GetType()

Obtiene el Type de la instancia actual.

(Heredado de Object)
InitializeLifetimeService()

Inicializa la concesión de período de duración del objeto ajustado.

InitializeLifetimeService()
Obsoletos.

Obtiene un objeto de servicio de duración para controlar la directiva de duración de esta instancia.

(Heredado de MarshalByRefObject)
MemberwiseClone()

Crea una copia superficial del Object actual.

(Heredado de Object)
MemberwiseClone(Boolean)

Crea una copia superficial del objeto MarshalByRefObject actual.

(Heredado de MarshalByRefObject)
ToString()

Devuelve una cadena que representa el objeto actual.

(Heredado de Object)
Unwrap()

Devuelve el objeto ajustado.

Se aplica a