IMethodCallMessage Interface
Defines the method call message interface.
For a list of all members of this type, see IMethodCallMessage Members.
[Visual Basic] Public Interface IMethodCallMessage Inherits IMethodMessage, IMessage [C#] public interface IMethodCallMessage : IMethodMessage, IMessage [C++] public __gc __interface IMethodCallMessage : public IMethodMessage, IMessage [JScript] public interface IMethodCallMessage implements IMethodMessage, IMessage
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.
Example
[Visual Basic] Imports System Imports System.Collections Imports System.Runtime.Remoting Imports System.Runtime.Remoting.Proxies Imports System.Runtime.Remoting.Messaging 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. 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. 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 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 [C#] 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."); } } } [C++] #using <mscorlib.dll> 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 __gc 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. } public: IMessage* Invoke(IMessage* myIMessage) { Console::WriteLine(S"MyProxy::Invoke Start"); Console::WriteLine(S""); ReturnMessage* myReturnMessage = 0; if (dynamic_cast<IMethodCallMessage*>(myIMessage)) { Console::WriteLine(S"Message is of type 'IMethodCallMessage*'."); Console::WriteLine(S""); IMethodCallMessage* myIMethodCallMessage; myIMethodCallMessage = dynamic_cast<IMethodCallMessage*>(myIMessage); Console::WriteLine(S"InArgCount is : {0}", __box(myIMethodCallMessage->InArgCount)); IEnumerator* myEnum = myIMethodCallMessage->InArgs->GetEnumerator(); while (myEnum->MoveNext()) { Object* myObj = __try_cast<Object*>(myEnum->Current); Console::WriteLine(S"InArgs is : {0}", myObj); } for (int i=0; i<myIMethodCallMessage->InArgCount; i++) { Console::WriteLine(S"GetArgName({0}) is : {1}", __box(i), myIMethodCallMessage->GetArgName(i)); Console::WriteLine(S"GetInArg({0}) is : {0}", __box(i), myIMethodCallMessage->GetInArg(i)); } Console::WriteLine(S""); } else if (dynamic_cast<IMethodReturnMessage*>(myIMessage)) Console::WriteLine(S"Message is of type 'IMethodReturnMessage*'."); // Build Return Message myReturnMessage = new ReturnMessage( __box(5), 0, 0, 0, dynamic_cast<IMethodCallMessage*>(myIMessage)); Console::WriteLine(S"MyProxy::Invoke - Finish"); return myReturnMessage; } }; // The class used to obtain Metadata. public __gc class MyMarshalByRefClass : public MarshalByRefObject { public: int MyMethod(String* str, double dbl, int i) { Console::WriteLine(S"MyMarshalByRefClass::MyMethod {0} {1} {2}", str, __box(dbl), __box(i)); return 0; } }; // Main routine that drives the whole sample. int main() { Console::WriteLine(S"Generate a new MyProxy."); MyProxy* myProxy = new MyProxy(__typeof(MyMarshalByRefClass)); Console::WriteLine(S"Obtain the transparent proxy from myProxy."); MyMarshalByRefClass* myMarshalByRefClassObj = dynamic_cast<MyMarshalByRefClass*>(myProxy->GetTransparentProxy()); Console::WriteLine(S"Calling the Proxy."); Object* myReturnValue = __box(myMarshalByRefClassObj->MyMethod(S"Microsoft", 1.2, 6)); Console::WriteLine(S"Sample Done."); return 0; }
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Requirements
Namespace: System.Runtime.Remoting.Messaging
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: Mscorlib (in Mscorlib.dll)
See Also
IMethodCallMessage Members | System.Runtime.Remoting.Messaging Namespace