ObjectHandle Klasa

Definicja

Zawija odwołania do obiektów zorganizowanych według wartości, umożliwiając ich zwracanie za pośrednictwem operatora pośredniego.Wraps marshal-by-value object references, allowing them to be returned through an indirection.

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
Dziedziczenie
ObjectHandle
Atrybuty
Implementuje

Przykłady

Poniższy przykład kodu pokazuje, jak utworzyć obiekt w innym AppDomain i pobrać serwer proxy do obiektu z ObjectHandle .The following code example shows how to create an object in another AppDomain, and retrieve a proxy to the object from a ObjectHandle. W tym przykładzie można założyć, że kod MyType klasy jest kompilowany do zestawu o nazwie "ObjectHandleAssembly".In this example, you can assume that the code of the MyType class is compiled into an assembly called "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

Uwagi

ObjectHandleKlasa służy do przekazywania obiektu (w stanie opakowanym) między wieloma domenami aplikacji bez ładowania metadanych dla zapakowanego obiektu w każdym z nich AppDomain , za pomocą ObjectHandle którego podróżuje.The ObjectHandle class is used to pass an object (in a wrapped state) between multiple application domains without loading the metadata for the wrapped object in each AppDomain through which the ObjectHandle travels. W ten sposób ObjectHandle Klasa daje formantowi wywołującemu, kiedy Type obiekt zdalny jest ładowany do domeny.Thus, the ObjectHandle class gives the caller control of when the Type of the remote object is loaded into a domain.

Konstruktory

ObjectHandle(Object)

Inicjuje wystąpienie ObjectHandle klasy, zawijając dany obiekt o .Initializes an instance of the ObjectHandle class, wrapping the given object o.

Metody

CreateObjRef(Type)

Tworzy obiekt, który zawiera wszystkie istotne informacje wymagane do wygenerowania serwera proxy używanego do komunikacji z obiektem zdalnym.Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(Odziedziczone po MarshalByRefObject)
Equals(Object)

Określa, czy dany obiekt jest taki sam, jak bieżący obiekt.Determines whether the specified object is equal to the current object.

(Odziedziczone po Object)
GetHashCode()

Służy jako domyślna funkcja skrótu.Serves as the default hash function.

(Odziedziczone po Object)
GetLifetimeService()
Nieaktualne.

Pobiera bieżący obiekt usługi okresu istnienia, który kontroluje zasady okresu istnienia dla tego wystąpienia.Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(Odziedziczone po MarshalByRefObject)
GetType()

Pobiera Type bieżące wystąpienie.Gets the Type of the current instance.

(Odziedziczone po Object)
InitializeLifetimeService()

Inicjuje dzierżawę okresu istnienia opakowanego obiektu.Initializes the lifetime lease of the wrapped object.

InitializeLifetimeService()
Nieaktualne.

Uzyskuje obiekt usługi istnienia w celu kontrolowania zasad okresu istnienia dla tego wystąpienia.Obtains a lifetime service object to control the lifetime policy for this instance.

(Odziedziczone po MarshalByRefObject)
MemberwiseClone()

Tworzy skróconą kopię bieżącego elementu Object .Creates a shallow copy of the current Object.

(Odziedziczone po Object)
MemberwiseClone(Boolean)

Tworzy skróconą kopię bieżącego MarshalByRefObject obiektu.Creates a shallow copy of the current MarshalByRefObject object.

(Odziedziczone po MarshalByRefObject)
ToString()

Zwraca ciąg reprezentujący bieżący obiekt.Returns a string that represents the current object.

(Odziedziczone po Object)
Unwrap()

Zwraca opakowany obiekt.Returns the wrapped object.

Dotyczy