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IMethodCallMessage Interface
Visual Studio 2008
Defines the method call message interface.
Assembly: mscorlib (in mscorlib.dll)
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
#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;
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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