Export (0) Print
Expand All

IMethodReturnMessage Interface

Defines the method call return message interface.

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

[ComVisibleAttribute(true)] 
public interface IMethodReturnMessage : IMethodMessage, IMessage
/** @attribute ComVisibleAttribute(true) */ 
public interface IMethodReturnMessage extends IMethodMessage, IMessage
ComVisibleAttribute(true) 
public interface IMethodReturnMessage extends IMethodMessage, IMessage
Not applicable.

A method call return message represents the response to a method call on an object at the end of the message sink. An IMethodReturnMessage is generated as a result of a method called on a remote object, and is used to return the results of the method call back to the caller.

The following example code shows a custom proxy that overrides RealProxy.Invoke in order to write the return message information to the console.

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public class MyProxy : RealProxy
{
   String stringUri;
   MarshalByRefObject myMarshalByRefObject;

   public MyProxy(Type myType): base(myType)
   {
      myMarshalByRefObject = (MarshalByRefObject)Activator.CreateInstance(myType);
      ObjRef myObject = RemotingServices.Marshal(myMarshalByRefObject);
      stringUri = myObject.URI;
   }

   public override IMessage Invoke(IMessage myMessage)
   {
      IMethodCallMessage myCallMessage = (IMethodCallMessage)myMessage;

      IMethodReturnMessage myIMethodReturnMessage =
         RemotingServices.ExecuteMessage(myMarshalByRefObject, myCallMessage);

      Console.WriteLine("Method name : " + myIMethodReturnMessage.MethodName);
      Console.WriteLine("The return value is : " + myIMethodReturnMessage.ReturnValue);

      // Get number of 'ref' and 'out' parameters.
      int myArgOutCount = myIMethodReturnMessage.OutArgCount;
      Console.WriteLine("The number of 'ref', 'out' parameters are : " +
         myIMethodReturnMessage.OutArgCount);
      // Gets name and values of 'ref' and 'out' parameters.
      for(int i = 0; i < myArgOutCount; i++)
      {
         Console.WriteLine("Name of argument {0} is '{1}'.",
            i, myIMethodReturnMessage.GetOutArgName(i));
         Console.WriteLine("Value of argument {0} is '{1}'.",
            i, myIMethodReturnMessage.GetOutArg(i));
      }
      Console.WriteLine();
      object[] myObjectArray = myIMethodReturnMessage.OutArgs; 
      for(int i = 0; i < myObjectArray.Length; i++)
         Console.WriteLine("Value of argument {0} is '{1}' in OutArgs",
            i, myObjectArray[i]);
      return myIMethodReturnMessage;
   }
}

/** @attribute SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.Infrastructure)
*/
public class MyProxy extends RealProxy
{
    private String stringUri;
    private MarshalByRefObject myMarshalByRefObject;

    public MyProxy(Type myType)
    {
        super(myType);
        myMarshalByRefObject 
            = (MarshalByRefObject)Activator.CreateInstance(myType);
        ObjRef myObject = RemotingServices.Marshal(myMarshalByRefObject);
        stringUri = myObject.get_URI();
    } //MyProxy

    public IMessage Invoke(IMessage myMessage)
    {
        IMethodCallMessage myCallMessage = (IMethodCallMessage)myMessage;
        IMethodReturnMessage myIMethodReturnMessage 
            = RemotingServices.ExecuteMessage(myMarshalByRefObject,
                myCallMessage);
        Console.WriteLine("Method name : " 
            + myIMethodReturnMessage.get_MethodName());
        Console.WriteLine("The return value is : " 
            + myIMethodReturnMessage.get_ReturnValue());

        // Get number of 'ref' and 'out' parameters.
        int myArgOutCount = myIMethodReturnMessage.get_OutArgCount();

        Console.WriteLine("The number of 'ref', 'out' parameters are : " 
            + myIMethodReturnMessage.get_OutArgCount());

        // Gets name and values of 'ref' and 'out' parameters.
        for (int i = 0; i < myArgOutCount; i++) {
            Console.WriteLine("Name of argument {0} is '{1}'.",
                System.Convert.ToString(i),
                myIMethodReturnMessage.GetOutArgName(i));
            Console.WriteLine("Value of argument {0} is '{1}'.",
                System.Convert.ToString(i),
                myIMethodReturnMessage.GetOutArg(i));
        }
        Console.WriteLine();
        Object myObjectArray[] = myIMethodReturnMessage.get_OutArgs();

        for (int i = 0; i < myObjectArray.length; i++) {
            Console.WriteLine("Value of argument {0} is '{1}' in OutArgs",
                System.Convert.ToString(i), myObjectArray.get_Item(i));
        }

        return myIMethodReturnMessage;
    } //Invoke
} //MyProxy

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions

ADD
Show:
© 2014 Microsoft