IMethodCallMessage Interface

Referência

Definição

Namespace:: System.Runtime.Remoting.Messaging

Assembly:: mscorlib.dll

Importante

Algumas informações se referem a produtos de pré-lançamento que podem ser substancialmente modificados antes do lançamento. A Microsoft não oferece garantias, expressas ou implícitas, das informações aqui fornecidas.

Define a interface de mensagem de chamada do método.

public interface class IMethodCallMessage : System::Runtime::Remoting::Messaging::IMethodMessage

public interface IMethodCallMessage : System.Runtime.Remoting.Messaging.IMethodMessage

[System.Runtime.InteropServices.ComVisible(true)]
public interface IMethodCallMessage : System.Runtime.Remoting.Messaging.IMethodMessage

type IMethodCallMessage = interface
    interface IMethodMessage
    interface IMessage

[<System.Runtime.InteropServices.ComVisible(true)>]
type IMethodCallMessage = interface
    interface IMethodMessage
    interface IMessage

Public Interface IMethodCallMessage
Implements IMethodMessage

Derivado: System.Runtime.Remoting.Activation.IConstructionCallMessage

System.Runtime.Remoting.Messaging.ConstructionCall

System.Runtime.Remoting.Messaging.MethodCall

System.Runtime.Remoting.Messaging.MethodCallMessageWrapper

Atributos: ComVisibleAttribute

Implementações: IMessage IMethodMessage

Exemplos

using namespace System;
using namespace System::Collections;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Proxies;
using namespace System::Runtime::Remoting::Messaging;

// MyProxy extends the CLR Remoting RealProxy.
// In the same class, in the Invoke method, the methods and properties of the 
// IMethodCallMessage are demonstrated.

[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
{
public:
   MyProxy( Type^ myType )
      : RealProxy( myType )
   {
      // This constructor forwards the call to base RealProxy.
      // RealProxy uses the Type to generate a transparent proxy.
   }

   virtual IMessage^ Invoke( IMessage^ myIMessage ) override
   {
      Console::WriteLine( "MyProxy::Invoke Start" );
      Console::WriteLine( "" );
      ReturnMessage^ myReturnMessage = nullptr;
      if ( dynamic_cast<IMethodCallMessage^>(myIMessage) )
      {
         Console::WriteLine( "Message is of type 'IMethodCallMessage*'." );
         Console::WriteLine( "" );
         IMethodCallMessage^ myIMethodCallMessage;
         myIMethodCallMessage = dynamic_cast<IMethodCallMessage^>(myIMessage);
         Console::WriteLine( "InArgCount is  : {0}", myIMethodCallMessage->InArgCount );
         IEnumerator^ myEnum = myIMethodCallMessage->InArgs->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            Object^ myObj = safe_cast<Object^>(myEnum->Current);
            Console::WriteLine( "InArgs is : {0}", myObj );
         }

         for ( int i = 0; i < myIMethodCallMessage->InArgCount; i++ )
         {
            Console::WriteLine( "GetArgName({0}) is : {1}", i, myIMethodCallMessage->GetArgName( i ) );
            Console::WriteLine( "GetInArg({0}) is : {0}", i, myIMethodCallMessage->GetInArg( i ) );

         }
         Console::WriteLine( "" );
      }
      else
      if ( dynamic_cast<IMethodReturnMessage^>(myIMessage) )
            Console::WriteLine( "Message is of type 'IMethodReturnMessage*'." );

      // Build Return Message 
      myReturnMessage = gcnew ReturnMessage( 5,nullptr,0,nullptr,dynamic_cast<IMethodCallMessage^>(myIMessage) );
      Console::WriteLine( "MyProxy::Invoke - Finish" );
      return myReturnMessage;
   }
};

// The class used to obtain Metadata.
public ref class MyMarshalByRefClass: public MarshalByRefObject
{
public:
   int MyMethod( String^ str, double dbl, int i )
   {
      Console::WriteLine( "MyMarshalByRefClass::MyMethod {0} {1} {2}", str, dbl, i );
      return 0;
   }

};

// Main routine that drives the whole sample.
int main()
{
   Console::WriteLine( "Generate a new MyProxy." );
   MyProxy^ myProxy = gcnew MyProxy( MyMarshalByRefClass::typeid );
   Console::WriteLine( "Obtain the transparent proxy from myProxy." );
   MyMarshalByRefClass^ myMarshalByRefClassObj = dynamic_cast<MyMarshalByRefClass^>(myProxy->GetTransparentProxy());
   Console::WriteLine( "Calling the Proxy." );
   Object^ myReturnValue = myMarshalByRefClassObj->MyMethod( "Microsoft", 1.2, 6 );
   Console::WriteLine( "Sample Done." );
   return 0;
}

using System;
using System.Collections;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Proxies;
using System.Runtime.Remoting.Messaging;

namespace IMethodCallMessageNS
{
   // MyProxy extends the CLR Remoting RealProxy.
   // In the same class, in the Invoke method, the methods and properties of the
   // IMethodCallMessage are demonstrated.

   public class MyProxy : RealProxy
   {
      public MyProxy(Type myType) : base(myType)
      {
         // This constructor forwards the call to base RealProxy.
         // RealProxy uses the Type to generate a transparent proxy.
      }


      public override IMessage Invoke(IMessage myIMessage)
      {
         Console.WriteLine("MyProxy.Invoke Start");
         Console.WriteLine("");
         ReturnMessage myReturnMessage = null;

         if (myIMessage is IMethodCallMessage)
         {
            Console.WriteLine("Message is of type 'IMethodCallMessage'.");
            Console.WriteLine("");

            IMethodCallMessage myIMethodCallMessage;
            myIMethodCallMessage=(IMethodCallMessage)myIMessage;
            Console.WriteLine("InArgCount is  : " +
                              myIMethodCallMessage.InArgCount.ToString());

            foreach (object myObj in myIMethodCallMessage.InArgs)
            {
               Console.WriteLine("InArgs is : " + myObj.ToString());
            }

            for(int i=0; i<myIMethodCallMessage.InArgCount; i++)
            {
               Console.WriteLine("GetArgName(" +i.ToString() +") is : " +
                                       myIMethodCallMessage.GetArgName(i));
               Console.WriteLine("GetInArg("+i.ToString() +") is : " +
                              myIMethodCallMessage.GetInArg(i).ToString());
            }
            Console.WriteLine("");
         }
         else if (myIMessage is IMethodReturnMessage)
            {
                Console.WriteLine("Message is of type 'IMethodReturnMessage'.");
            }

            // Build Return Message
            myReturnMessage = new ReturnMessage(5,null,0,null,
                                       (IMethodCallMessage)myIMessage);

         Console.WriteLine("MyProxy.Invoke - Finish");
         return myReturnMessage;
      }
   }

   // The class used to obtain Metadata.
   public class MyMarshalByRefClass : MarshalByRefObject
   {
      public int MyMethod(string str, double dbl, int i)
      {
         Console.WriteLine("MyMarshalByRefClass.MyMethod {0} {1} {2}", str, dbl, i);
         return 0;
      }
   }
   // Main class that drives the whole sample.
   public class ProxySample
   {
      public static void Main()
      {
         Console.WriteLine("Generate a new MyProxy.");
         MyProxy myProxy = new MyProxy(typeof(MyMarshalByRefClass));

         Console.WriteLine("Obtain the transparent proxy from myProxy.");
         MyMarshalByRefClass myMarshalByRefClassObj =
                              (MyMarshalByRefClass)myProxy.GetTransparentProxy();

         Console.WriteLine("Calling the Proxy.");
         object myReturnValue = myMarshalByRefClassObj.MyMethod("Microsoft", 1.2, 6);

         Console.WriteLine("Sample Done.");
      }
   }
}

Imports System.Collections
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Proxies
Imports System.Runtime.Remoting.Messaging
Imports System.Security.Permissions

Namespace IMethodCallMessageNS

   ' MyProxy extends the CLR Remoting RealProxy.
   ' In the same class, in the Invoke method, we demonstrate the
   ' methods and properties of the IMethodCallMessage.

   <PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
   Public Class MyProxy
      Inherits RealProxy

      Public Sub New(ByVal myType As Type)
         ' This constructor forwards the call to base RealProxy.
         ' RealProxy uses the Type to generate a transparent proxy.
         MyBase.New(myType)
      End Sub

      Public Overrides Function Invoke(ByVal myIMessage As IMessage) As IMessage
         Console.WriteLine("MyProxy.Invoke Start")
         Console.WriteLine("")

         If TypeOf myIMessage Is IMethodCallMessage Then
            Console.WriteLine("Message is of type 'IMethodCallMessage'.")
            Console.WriteLine("")

            Dim myIMethodCallMessage As IMethodCallMessage
            myIMethodCallMessage = CType(myIMessage, IMethodCallMessage)

            Console.WriteLine("InArgCount is : " + myIMethodCallMessage.InArgCount.ToString)
            Dim myObj As Object
            For Each myObj In myIMethodCallMessage.InArgs
               Console.WriteLine("InArgs is : " + myObj.ToString())
            Next

            Dim i As Integer
            For i = 0 To myIMethodCallMessage.InArgCount - 1
               Console.WriteLine("GetArgName(" + i.ToString() + ") is : " + myIMethodCallMessage.GetArgName(i))
               Console.WriteLine("GetInArg(" + i.ToString() + ") is : " + myIMethodCallMessage.GetInArg(i).ToString)
            Next i

            Console.WriteLine("")
         ElseIf TypeOf myIMessage Is IMethodReturnMessage Then
            Console.WriteLine("Message is of type 'IMethodReturnMessage'.")
         End If

         ' Build Return Message
         Dim myReturnMessage As New ReturnMessage(5, Nothing, 0, Nothing, _
                                    CType(myIMessage, IMethodCallMessage))

         Console.WriteLine("MyProxy.Invoke - Finish")
         Return myReturnMessage

      End Function 'Invoke



   End Class

   ' The class used to obtain Metadata.
   <PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
   Public Class MyMarshalByRefClass
      Inherits MarshalByRefObject

      Public Function MyMethod(ByVal str As String, ByVal dbl As Double, ByVal i As Integer) As Integer
         Console.WriteLine("MyMarshalByRefClass.MyMethod {0} {1} {2}", str, dbl, i)
         Return 0
      End Function 'MyMethod
   End Class

   ' Main class that drives the whole sample.
   Public Class ProxySample

      <SecurityPermission(SecurityAction.LinkDemand)> _
      Shared Sub Main()
         Console.WriteLine("Generate a new MyProxy.")
         Dim myProxy As New MyProxy(GetType(MyMarshalByRefClass))

         Console.WriteLine("Obtain the transparent proxy from myProxy.")
         Dim myMarshalByRefClassObj As MyMarshalByRefClass = _
                        CType(myProxy.GetTransparentProxy(), MyMarshalByRefClass)

         Console.WriteLine("Calling the Proxy.")
         Dim myReturnValue As Object = myMarshalByRefClassObj.MyMethod("Microsoft", 1.2, 6)

         Console.WriteLine("Sample Done.")
      End Sub
   End Class
End Namespace 'IMethodCallMessageNS

Comentários

Um IMethodCallMessage é gerado como resultado de um método chamado em um objeto remoto e é usado para transportar detalhes sobre a chamada de método remoto para o lado do servidor.

Propriedades

ArgCount	Obtém o número de argumentos passados ao método. (Herdado de IMethodMessage)
Args	Obtém uma matriz de argumentos passados ao método. (Herdado de IMethodMessage)
HasVarArgs	Obtém um valor que indica se a mensagem tem argumentos variáveis. (Herdado de IMethodMessage)
InArgCount	Obtém o número de argumentos na chamada que não são marcados como parâmetros `out`.
InArgs	Obtém uma matriz de argumentos que não são marcados como parâmetros `out`.
LogicalCallContext	Obtém o LogicalCallContext da chamada de método atual. (Herdado de IMethodMessage)
MethodBase	Obtém a MethodBase do método chamado. (Herdado de IMethodMessage)
MethodName	Obtém o nome do método invocado. (Herdado de IMethodMessage)
MethodSignature	Obtém um objeto que contém a assinatura do método. (Herdado de IMethodMessage)
Properties	Obtém um IDictionary que representa uma coleção das propriedades da mensagem. (Herdado de IMessage)
TypeName	Obtém o nome Type completo do objeto específico ao qual a chamada se destina. (Herdado de IMethodMessage)
Uri	Obtém o URI do objeto específico ao qual a chamada se destina. (Herdado de IMethodMessage)

Métodos

GetArg(Int32)	Obtém um argumento específico como um Object. (Herdado de IMethodMessage)
GetArgName(Int32)	Obtém o nome do argumento passado ao método. (Herdado de IMethodMessage)
GetInArg(Int32)	Retorna o argumento especificado que não está marcado como um parâmetro `out`.
GetInArgName(Int32)	Retorna o nome do argumento especificado que não está marcado como um parâmetro `out`.

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