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IMethodCallMessage Interface

Defines the method call message interface.

Namespace:  System.Runtime.Remoting.Messaging
Assembly:  mscorlib (in mscorlib.dll)

public interface class IMethodCallMessage : IMethodMessage, 

The IMethodCallMessage type exposes the following members.

Public propertyArgCountGets the number of arguments passed to the method. (Inherited from IMethodMessage.)
Public propertyArgsGets an array of arguments passed to the method. (Inherited from IMethodMessage.)
Public propertyHasVarArgsGets a value indicating whether the message has variable arguments. (Inherited from IMethodMessage.)
Public propertyInArgCountGets the number of arguments in the call that are not marked as out parameters.
Public propertyInArgsGets an array of arguments that are not marked as out parameters.
Public propertyLogicalCallContextGets the LogicalCallContext for the current method call. (Inherited from IMethodMessage.)
Public propertyMethodBaseGets the MethodBase of the called method. (Inherited from IMethodMessage.)
Public propertyMethodNameGets the name of the invoked method. (Inherited from IMethodMessage.)
Public propertyMethodSignatureGets an object containing the method signature. (Inherited from IMethodMessage.)
Public propertyPropertiesGets an IDictionary that represents a collection of the message's properties. (Inherited from IMessage.)
Public propertyTypeNameGets the full Type name of the specific object that the call is destined for. (Inherited from IMethodMessage.)
Public propertyUriGets the URI of the specific object that the call is destined for. (Inherited from IMethodMessage.)

Public methodGetArgGets a specific argument as an Object. (Inherited from IMethodMessage.)
Public methodGetArgNameGets the name of the argument passed to the method. (Inherited from IMethodMessage.)
Public methodGetInArgReturns the specified argument that is not marked as an out parameter.
Public methodGetInArgNameReturns the name of the specified argument that is not marked as an out parameter.

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.

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.


public ref class MyProxy: public RealProxy
   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( "" );
      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
   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;

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Community Additions

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