IMethodMessage.LogicalCallContext 屬性

定義

命名空間:

System.Runtime.Remoting.Messaging

組件:

mscorlib.dll

取得目前方法呼叫的 LogicalCallContext。

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

屬性值

LogicalCallContext

取得目前方法呼叫的 LogicalCallContext。

屬性

SecurityCriticalAttribute

例外狀況

SecurityException

立即呼叫者透過對介面的參考進行呼叫，且沒有基礎結構權限。

範例

下列範例程式碼示範如何使用 LogicalCallContext 屬性來判斷是否有任何值附加至邏輯執行緒。

//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