Export (0) Print
Expand All

IMethodCallMessage Interface

Defines the method call message interface.

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

[ComVisibleAttribute(true)]
public interface IMethodCallMessage : IMethodMessage, 
	IMessage

The IMethodCallMessage type exposes the following members.

  NameDescription
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.)
Top

  NameDescription
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.
Top

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 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.");
      }
   }
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Show:
© 2014 Microsoft