IMethodCallMessage Interface

Référence

Définition

Espace de noms:: System.Runtime.Remoting.Messaging

Assembly:: mscorlib.dll

Important

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Définit l'interface de message d'appel de méthode.

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

Dérivé: System.Runtime.Remoting.Activation.IConstructionCallMessage

System.Runtime.Remoting.Messaging.ConstructionCall

System.Runtime.Remoting.Messaging.MethodCall

System.Runtime.Remoting.Messaging.MethodCallMessageWrapper

Attributs: ComVisibleAttribute

Implémente: IMessage IMethodMessage

Exemples

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

Remarques

Un IMethodCallMessage est généré à la suite d’une méthode appelée sur un objet distant et est utilisé pour transporter les détails de l’appel de méthode distante côté serveur.

Propriétés

ArgCount	Obtient le nombre d'arguments passés à la méthode. (Hérité de IMethodMessage)
Args	Obtient un tableau d'arguments passés à la méthode. (Hérité de IMethodMessage)
HasVarArgs	Obtient une valeur indiquant si le message a un nombre variable d'arguments. (Hérité de IMethodMessage)
InArgCount	Obtient le nombre d'arguments dans l'appel qui ne sont pas marqués comme paramètres `out`.
InArgs	Obtient un tableau d'arguments qui ne sont pas marqués comme paramètres `out`.
LogicalCallContext	Obtient LogicalCallContext pour l'appel de méthode en cours. (Hérité de IMethodMessage)
MethodBase	Obtient le MethodBase de la méthode appelée. (Hérité de IMethodMessage)
MethodName	Obtient le nom de la méthode appelée. (Hérité de IMethodMessage)
MethodSignature	Obtient un objet contenant la signature de la méthode. (Hérité de IMethodMessage)
Properties	Obtient un IDictionary qui représente une collection des propriétés du message. (Hérité de IMessage)
TypeName	Obtient le nom Type complet de l'objet spécifique auquel l'appel est destiné. (Hérité de IMethodMessage)
Uri	Obtient l'URI de l'objet spécifique auquel l'appel est destiné. (Hérité de IMethodMessage)

Méthodes

GetArg(Int32)	Obtient un argument spécifique sous forme de Object. (Hérité de IMethodMessage)
GetArgName(Int32)	Obtient le nom de l'argument passé à la méthode. (Hérité de IMethodMessage)
GetInArg(Int32)	Retourne l'argument spécifié qui n'est pas marqué comme paramètre `out`.
GetInArgName(Int32)	Retourne le nom de l'argument spécifié qui n'est pas marqué comme paramètre `out`.

S’applique à

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