IMethodMessage.LogicalCallContext Proprietà

Riferimento

Definizione

Spazio dei nomi:: System.Runtime.Remoting.Messaging

Assembly:: mscorlib.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Ottiene l'oggetto LogicalCallContext per la chiamata di metodo corrente.

public:
 property System::Runtime::Remoting::Messaging::LogicalCallContext ^ LogicalCallContext { System::Runtime::Remoting::Messaging::LogicalCallContext ^ get(); };

public System.Runtime.Remoting.Messaging.LogicalCallContext LogicalCallContext { get; }

public System.Runtime.Remoting.Messaging.LogicalCallContext LogicalCallContext { [System.Security.SecurityCritical] get; }

member this.LogicalCallContext : System.Runtime.Remoting.Messaging.LogicalCallContext

[<get: System.Security.SecurityCritical>]
member this.LogicalCallContext : System.Runtime.Remoting.Messaging.LogicalCallContext

Public ReadOnly Property LogicalCallContext As LogicalCallContext

Valore della proprietà

LogicalCallContext

Ottiene l'oggetto LogicalCallContext per la chiamata di metodo corrente.

Attributi: SecurityCriticalAttribute

Eccezioni

SecurityException

Il chiamante immediato esegue la chiamata tramite un riferimento all'interfaccia, ma non dispone delle autorizzazioni di accesso all'infrastruttura.

Esempio

Nell'esempio di codice seguente viene illustrato come utilizzare la LogicalCallContext proprietà per determinare se i valori sono collegati al thread logico.

//This sample requires full trust
[PermissionSetAttribute(SecurityAction::Demand, Name = "FullTrust")]
public ref class MyProxy: public RealProxy
{
private:
   String^ stringUri;
   MarshalByRefObject^ targetObject;

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

   MyProxy( Type^ type, MarshalByRefObject^ targetObject )
      : RealProxy( type )
   {
      this->targetObject = targetObject;
   }

   virtual IMessage^ Invoke( IMessage^ message ) override
   {
      message->Properties[ "__Uri" ] = stringUri;
      IMethodMessage^ myMethodMessage = dynamic_cast<IMethodMessage^>(ChannelServices::SyncDispatchMessage( message ));
      Console::WriteLine( "---------IMethodMessage* example-------" );
      Console::WriteLine( "Method name : {0}", myMethodMessage->MethodName );
      Console::WriteLine( "LogicalCallContext has information : {0}", myMethodMessage->LogicalCallContext->HasInfo );
      Console::WriteLine( "Uri : {0}", myMethodMessage->Uri );
      return myMethodMessage;
   }
};

   public class MyProxy : RealProxy
   {

   String stringUri;
   MarshalByRefObject targetObject;

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

   public MyProxy(Type type, MarshalByRefObject targetObject) : base(type)
   {
      this.targetObject = targetObject;
   }

   public override IMessage Invoke(IMessage message)
   {
      message.Properties["__Uri"] = stringUri;
      IMethodMessage myMethodMessage =
         (IMethodMessage)ChannelServices.SyncDispatchMessage(message);

      Console.WriteLine("---------IMethodMessage example-------");
      Console.WriteLine("Method name : " + myMethodMessage.MethodName);
      Console.WriteLine("LogicalCallContext has information : " +
         myMethodMessage.LogicalCallContext.HasInfo);
      Console.WriteLine("Uri : " + myMethodMessage.Uri);

      return myMethodMessage;
   }
}

Public Class MyProxy
   Inherits RealProxy

   Private stringUri As String
   Private targetObject As MarshalByRefObject

   <SecurityPermission(SecurityAction.LinkDemand)> _
   Public Sub New(type As Type)
      MyBase.New(type)
      targetObject = CType(Activator.CreateInstance(type), MarshalByRefObject)
      Dim myObject As ObjRef = RemotingServices.Marshal(targetObject)
      stringUri = myObject.URI
   End Sub

<SecurityPermission(SecurityAction.LinkDemand)> _
   Public Sub New(type As Type, targetObject As MarshalByRefObject)
      MyBase.New(type)
      Me.targetObject = targetObject
   End Sub


<SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags:=SecurityPermissionFlag.Infrastructure)> _
   Public Overrides Function Invoke(message As IMessage) As IMessage
      message.Properties("__Uri") = stringUri
      Dim myMethodMessage As IMethodMessage = _
            CType(ChannelServices.SyncDispatchMessage(message), IMethodMessage)
      Console.WriteLine("---------IMethodMessage example-------")
      Console.WriteLine("Method name : " + myMethodMessage.MethodName)
      Console.WriteLine("LogicalCallContext has information : " + _
            myMethodMessage.LogicalCallContext.HasInfo.ToString())
      Console.WriteLine("Uri : " + myMethodMessage.Uri)
      Return myMethodMessage
   End Function 'Invoke

End Class

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