ReturnMessage-Klasse

Artikel
08/20/2007

Enthält eine Meldung, die als Reaktion auf einen Methodenaufruf für ein Remoteobjekt zurückgegeben wird.

Namespace: System.Runtime.Remoting.Messaging
Assembly: mscorlib (in mscorlib.dll)

Syntax

'Declaration
<ComVisibleAttribute(True)> _
Public Class ReturnMessage
    Implements IMethodReturnMessage, IMethodMessage, IMessage
'Usage
Dim instance As ReturnMessage

[ComVisibleAttribute(true)] 
public class ReturnMessage : IMethodReturnMessage, IMethodMessage, IMessage

[ComVisibleAttribute(true)] 
public ref class ReturnMessage : IMethodReturnMessage, IMethodMessage, IMessage

/** @attribute ComVisibleAttribute(true) */ 
public class ReturnMessage implements IMethodReturnMessage, IMethodMessage, 
    IMessage

ComVisibleAttribute(true) 
public class ReturnMessage implements IMethodReturnMessage, IMethodMessage, 
    IMessage

Hinweise

Hinweis

Diese Klasse führt einen Verknüpfungsaufruf und eine Vererbungsforderung auf der Klassenebene aus. Eine SecurityException wird ausgelöst, wenn der direkte Aufrufer bzw. die abgeleitete Klasse nicht über die Berechtigung für die Infrastruktur verfügen. Ausführliche Informationen über Sicherheitsforderungen finden Sie unter Verknüpfungsaufrufe und Vererbungsforderungen.

Beispiel

<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
Public Class MyProxy
   Inherits RealProxy
   Private stringUri As String
   Private myMarshalByRefObject As MarshalByRefObject
   
   Public Sub New(myType As Type)
      MyBase.New(myType)
      myMarshalByRefObject = CType(Activator.CreateInstance(myType), MarshalByRefObject)
      Dim myObject As ObjRef = RemotingServices.Marshal(myMarshalByRefObject)
      stringUri = myObject.URI
   End Sub 'New
   
   Public Overrides Function Invoke(myMessage As IMessage) As IMessage
      Dim myCallMessage As IMethodCallMessage = CType(myMessage, IMethodCallMessage)

      Dim myIMethodReturnMessage As IMethodReturnMessage = RemotingServices. _
         ExecuteMessage(myMarshalByRefObject, myCallMessage)

      Console.WriteLine("Method name : " + myIMethodReturnMessage.MethodName)
      Console.WriteLine("The return value is : " + myIMethodReturnMessage.ReturnValue)
      
      ' Get number of 'ref' and 'out' parameters.
      Dim myArgOutCount As Integer = myIMethodReturnMessage.OutArgCount
      Console.WriteLine("The number of 'ref', 'out' parameters are : " + _
         myIMethodReturnMessage.OutArgCount.ToString())
      ' Gets name and values of 'ref' and 'out' parameters.
      Dim i As Integer
      For i = 0 To myArgOutCount - 1
         Console.WriteLine("Name of argument {0} is '{1}'.", i, _
            myIMethodReturnMessage.GetOutArgName(i))
         Console.WriteLine("Value of argument {0} is '{1}'.", i, _
            myIMethodReturnMessage.GetOutArg(i))
      Next i
      Console.WriteLine()
      Dim myObjectArray As Object() = myIMethodReturnMessage.OutArgs
      For i = 0 To myObjectArray.Length - 1
         Console.WriteLine("Value of argument {0} is '{1}' in OutArgs", i, myObjectArray(i))
      Next i
      Return myIMethodReturnMessage
   End Function 'Invoke
End Class 'MyProxy

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public class MyProxy : RealProxy
{
   String stringUri;
   MarshalByRefObject myMarshalByRefObject;

   public MyProxy(Type myType): base(myType)
   {
      myMarshalByRefObject = (MarshalByRefObject)Activator.CreateInstance(myType);
      ObjRef myObject = RemotingServices.Marshal(myMarshalByRefObject);
      stringUri = myObject.URI;
   }

   public override IMessage Invoke(IMessage myMessage)
   {
      IMethodCallMessage myCallMessage = (IMethodCallMessage)myMessage;

      IMethodReturnMessage myIMethodReturnMessage =
         RemotingServices.ExecuteMessage(myMarshalByRefObject, myCallMessage);

      Console.WriteLine("Method name : " + myIMethodReturnMessage.MethodName);
      Console.WriteLine("The return value is : " + myIMethodReturnMessage.ReturnValue);

      // Get number of 'ref' and 'out' parameters.
      int myArgOutCount = myIMethodReturnMessage.OutArgCount;
      Console.WriteLine("The number of 'ref', 'out' parameters are : " +
         myIMethodReturnMessage.OutArgCount);
      // Gets name and values of 'ref' and 'out' parameters.
      for(int i = 0; i < myArgOutCount; i++)
      {
         Console.WriteLine("Name of argument {0} is '{1}'.",
            i, myIMethodReturnMessage.GetOutArgName(i));
         Console.WriteLine("Value of argument {0} is '{1}'.",
            i, myIMethodReturnMessage.GetOutArg(i));
      }
      Console.WriteLine();
      object[] myObjectArray = myIMethodReturnMessage.OutArgs; 
      for(int i = 0; i < myObjectArray.Length; i++)
         Console.WriteLine("Value of argument {0} is '{1}' in OutArgs",
            i, myObjectArray[i]);
      return myIMethodReturnMessage;
   }
}

[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::LinkDemand, 
Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::InheritanceDemand, 
Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
public ref class MyProxy: public RealProxy
{
private:
   String^ stringUri;
   MarshalByRefObject^ myMarshalByRefObject;

public:
   MyProxy( Type^ myType ) : RealProxy( myType )
   {
      myMarshalByRefObject = dynamic_cast<MarshalByRefObject^>(Activator::CreateInstance( myType ));
      ObjRef^ myObject = RemotingServices::Marshal( myMarshalByRefObject );
      stringUri = myObject->URI;
   }

   virtual IMessage^ Invoke( IMessage^ myMessage ) override
   {
      IMethodCallMessage^ myCallMessage = (IMethodCallMessage^)( myMessage );

      IMethodReturnMessage^ myIMethodReturnMessage =
         RemotingServices::ExecuteMessage( myMarshalByRefObject, myCallMessage );

      Console::WriteLine( "Method name : {0}", myIMethodReturnMessage->MethodName );
      Console::WriteLine( "The return value is : {0}", myIMethodReturnMessage->ReturnValue );

      // Get number of 'ref' and 'out' parameters.
      int myArgOutCount = myIMethodReturnMessage->OutArgCount;
      Console::WriteLine( "The number of 'ref', 'out' parameters are : {0}",
         myIMethodReturnMessage->OutArgCount );
      // Gets name and values of 'ref' and 'out' parameters.
      for ( int i = 0; i < myArgOutCount; i++ )
      {
         Console::WriteLine( "Name of argument {0} is '{1}'.",
            i, myIMethodReturnMessage->GetOutArgName( i ) );
         Console::WriteLine( "Value of argument {0} is '{1}'.",
            i, myIMethodReturnMessage->GetOutArg( i ) );
      }
      Console::WriteLine();
      array<Object^>^myObjectArray = myIMethodReturnMessage->OutArgs;
      for ( int i = 0; i < myObjectArray->Length; i++ )
         Console::WriteLine( "Value of argument {0} is '{1}' in OutArgs",
            i, myObjectArray[ i ] );
      return myIMethodReturnMessage;
   }
};

/** @attribute SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.Infrastructure)
*/
public class MyProxy extends RealProxy
{
    private String stringUri;
    private MarshalByRefObject myMarshalByRefObject;

    public MyProxy(Type myType)
    {
        super(myType);
        myMarshalByRefObject 
            = (MarshalByRefObject)Activator.CreateInstance(myType);
        ObjRef myObject = RemotingServices.Marshal(myMarshalByRefObject);
        stringUri = myObject.get_URI();
    } //MyProxy

    public IMessage Invoke(IMessage myMessage)
    {
        IMethodCallMessage myCallMessage = (IMethodCallMessage)myMessage;
        IMethodReturnMessage myIMethodReturnMessage 
            = RemotingServices.ExecuteMessage(myMarshalByRefObject,
                myCallMessage);
        Console.WriteLine("Method name : " 
            + myIMethodReturnMessage.get_MethodName());
        Console.WriteLine("The return value is : " 
            + myIMethodReturnMessage.get_ReturnValue());

        // Get number of 'ref' and 'out' parameters.
        int myArgOutCount = myIMethodReturnMessage.get_OutArgCount();

        Console.WriteLine("The number of 'ref', 'out' parameters are : " 
            + myIMethodReturnMessage.get_OutArgCount());

        // Gets name and values of 'ref' and 'out' parameters.
        for (int i = 0; i < myArgOutCount; i++) {
            Console.WriteLine("Name of argument {0} is '{1}'.",
                System.Convert.ToString(i),
                myIMethodReturnMessage.GetOutArgName(i));
            Console.WriteLine("Value of argument {0} is '{1}'.",
                System.Convert.ToString(i),
                myIMethodReturnMessage.GetOutArg(i));
        }
        Console.WriteLine();
        Object myObjectArray[] = myIMethodReturnMessage.get_OutArgs();

        for (int i = 0; i < myObjectArray.length; i++) {
            Console.WriteLine("Value of argument {0} is '{1}' in OutArgs",
                System.Convert.ToString(i), myObjectArray.get_Item(i));
        }

        return myIMethodReturnMessage;
    } //Invoke
} //MyProxy

.NET Framework-Sicherheit

SecurityPermission für die Verwendung von Infrastrukturcode. Anforderungswert: SecurityAction.LinkDemand; Berechtigungswert: SecurityPermissionFlag.Infrastructure
SecurityPermission für die Verwendung von Infrastrukturcode. Anforderungswert: SecurityAction.InheritanceDemand; Berechtigungswert: SecurityPermissionFlag.Infrastructure

Vererbungshierarchie

System.Object
System.Runtime.Remoting.Messaging.ReturnMessage

Threadsicherheit

Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Freigeben über

ReturnMessage-Klasse

Syntax

Hinweise

Beispiel

.NET Framework-Sicherheit

Vererbungshierarchie

Threadsicherheit

Plattformen

Versionsinformationen

.NET Framework

Siehe auch

Referenz

Zusätzliche Ressourcen