ObjectHandle.Unwrap Methode

Definition

Namespace:

System.Runtime.Remoting

Assembly:

System.Runtime.dll

Quelle:

ObjectHandle.cs

Gibt das umschlossene Objekt zurück.

public:
 System::Object ^ Unwrap();

public object? Unwrap ();

member this.Unwrap : unit -> obj

Public Function Unwrap () As Object

Gibt zurück

Object

Das Objekt, das umschlossen wird.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie sie ein Objekt in einem anderen AppDomainAktivieren, einen Proxy mit der Unwrap -Methode abrufen und den Proxy für den Zugriff auf das Remoteobjekt verwenden.

// 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() );

// 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());

' 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())

Hinweise für Aufrufer

Ein ObjectHandle ist eine Remoteverbindung MarshalByRefObject , die vom Remoting-Lebensdauerdienst nachverfolgt wird. Ein Aufruf der aktuellen Methode kann fehlschlagen, wenn die Lebensdauerlease für die ObjectHandle abläuft.