IMethodMessage.LogicalCallContext 属性

定义

获取当前方法调用的 LogicalCallContextGets the LogicalCallContext for the current method call.

public:
 property System::Runtime::Remoting::Messaging::LogicalCallContext ^ LogicalCallContext { System::Runtime::Remoting::Messaging::LogicalCallContext ^ get(); };
public System.Runtime.Remoting.Messaging.LogicalCallContext LogicalCallContext { get; }
[get: System.Security.SecurityCritical]
public System.Runtime.Remoting.Messaging.LogicalCallContext LogicalCallContext { 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

属性值

LogicalCallContext

获取当前方法调用的 LogicalCallContextGets the LogicalCallContext for the current method call.

属性

例外

直接调用方通过引用接口进行调用,且没有基础结构权限。The immediate caller makes the call through a reference to the interface and does not have infrastructure permission.

示例

下面的示例代码演示如何使用 LogicalCallContext 属性来确定是否有任何值附加到逻辑线程。The following example code shows how to use the LogicalCallContext property to determine whether any values are attached to the logical thread.

//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;

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

   [SecurityPermission(SecurityAction.LinkDemand)]
   public MyProxy(Type type, MarshalByRefObject targetObject) : base(type)
   {
      this.targetObject = targetObject;
   }

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure)]
   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

适用于