IMethodCallMessage IMethodCallMessage IMethodCallMessage IMethodCallMessage Interface

Definition

Defines the method call message interface.

public interface class 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
Public Interface IMethodCallMessage
Implements IMethodMessage
Derived
Attributes
Implements

Examples

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;
using System.Security.Permissions;

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.

   [PermissionSet(SecurityAction.Demand, Name="FullTrust")]
   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.
   [PermissionSet(SecurityAction.Demand, Name="FullTrust")]
   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
   {
      [SecurityPermission(SecurityAction.LinkDemand)]
      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
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 'New

      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 'MyProxy

   ' 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 'MyMarshalByRefClass

   ' 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 'Main
   End Class 'ProxySample
End Namespace 'IMethodCallMessageNS

Remarks

An IMethodCallMessage is generated as a result of a method called on a remote object, and is used to transport details about the remote method call to the server side.

Properties

InArgCount InArgCount InArgCount InArgCount

Gets the number of arguments in the call that are not marked as out parameters.

InArgs InArgs InArgs InArgs

Gets an array of arguments that are not marked as out parameters.

Methods

GetInArg(Int32) GetInArg(Int32) GetInArg(Int32) GetInArg(Int32)

Returns the specified argument that is not marked as an out parameter.

GetInArgName(Int32) GetInArgName(Int32) GetInArgName(Int32) GetInArgName(Int32)

Returns the name of the specified argument that is not marked as an out parameter.

Applies to