IMethodMessage Interface
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Defines the method message interface.
public interface class IMethodMessage : System::Runtime::Remoting::Messaging::IMessage
public interface IMethodMessage : System.Runtime.Remoting.Messaging.IMessage
[System.Runtime.InteropServices.ComVisible(true)]
public interface IMethodMessage : System.Runtime.Remoting.Messaging.IMessage
type IMethodMessage = interface
interface IMessage
[<System.Runtime.InteropServices.ComVisible(true)>]
type IMethodMessage = interface
interface IMessage
Public Interface IMethodMessage
Implements IMessage
- Derived
- Attributes
- Implements
The following example code shows a custom proxy that overrides RealProxy.Invoke
in order to write the message information to the console and return immediately without making a remote call.
// This class requires full trust
[PermissionSetAttribute(SecurityAction::Demand, Name = "FullTrust")]
public ref class MyProxyClass: public RealProxy
{
private:
Object^ myObjectInstance;
Type^ myType;
public:
MyProxyClass( Type^ argType )
: RealProxy( argType )
{
myType = argType;
myObjectInstance = Activator::CreateInstance( argType );
}
// Overriding the Invoke method of RealProxy.
virtual IMessage^ Invoke( IMessage^ message ) override
{
IMethodMessage^ myMethodMessage = dynamic_cast<IMethodMessage^>(message);
Console::WriteLine( "**** Begin Invoke ****" );
Console::WriteLine( "\tType is : {0}", myType );
Console::WriteLine( "\tMethod name : {0}", myMethodMessage->MethodName );
for ( int i = 0; i < myMethodMessage->ArgCount; i++ )
{
Console::WriteLine( "\tArgName is : {0}", myMethodMessage->GetArgName( i ) );
Console::WriteLine( "\tArgValue is: {0}", myMethodMessage->GetArg( i ) );
}
if ( myMethodMessage->HasVarArgs )
Console::WriteLine( "\t The method have variable arguments!!" );
else
Console::WriteLine( "\t The method does not have variable arguments!!" );
// Dispatch the method call to the real Object*.
Object^ returnValue = myType->InvokeMember( myMethodMessage->MethodName, BindingFlags::InvokeMethod, nullptr, myObjectInstance, myMethodMessage->Args );
Console::WriteLine( "**** End Invoke ****" );
// Build the return message to pass back to the transparent proxy.
ReturnMessage^ myReturnMessage = gcnew ReturnMessage( returnValue,nullptr,0,nullptr,dynamic_cast<IMethodCallMessage^>(message) );
return myReturnMessage;
}
};
public class MyProxyClass : RealProxy
{
private Object myObjectInstance = null;
private Type myType = null;
public MyProxyClass(Type argType) : base(argType)
{
myType = argType;
myObjectInstance = Activator.CreateInstance(argType);
}
// Overriding the Invoke method of RealProxy.
public override IMessage Invoke(IMessage message)
{
IMethodMessage myMethodMessage = (IMethodMessage)message;
Console.WriteLine("**** Begin Invoke ****");
Console.WriteLine("\tType is : " + myType);
Console.WriteLine("\tMethod name : " + myMethodMessage.MethodName);
for (int i=0; i < myMethodMessage.ArgCount; i++)
{
Console.WriteLine("\tArgName is : " + myMethodMessage.GetArgName(i));
Console.WriteLine("\tArgValue is: " + myMethodMessage.GetArg(i));
}
if(myMethodMessage.HasVarArgs)
Console.WriteLine("\t The method have variable arguments!!");
else
Console.WriteLine("\t The method does not have variable arguments!!");
// Dispatch the method call to the real object.
Object returnValue = myType.InvokeMember( myMethodMessage.MethodName, BindingFlags.InvokeMethod, null,
myObjectInstance, myMethodMessage.Args );
Console.WriteLine("**** End Invoke ****");
// Build the return message to pass back to the transparent proxy.
ReturnMessage myReturnMessage = new ReturnMessage( returnValue, null, 0, null,
(IMethodCallMessage)message );
return myReturnMessage;
}
}
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
Public Class MyProxyClass
Inherits RealProxy
Private myObjectInstance As Object = Nothing
Private myType As Type = Nothing
Public Sub New(argType As Type)
MyBase.New(argType)
myType = argType
myObjectInstance = Activator.CreateInstance(argType)
End Sub
' Overriding the Invoke method of RealProxy.
Public Overrides Function Invoke(message As IMessage) As IMessage
Dim myMethodMessage As IMethodMessage = CType(message, IMethodMessage)
Console.WriteLine("**** Begin Invoke ****")
Console.WriteLine(ControlChars.Tab + "Type is : " + myType.ToString())
Console.WriteLine(ControlChars.Tab + "Method name : " + myMethodMessage.MethodName)
Dim i As Integer
For i = 0 To myMethodMessage.ArgCount - 1
Console.WriteLine(ControlChars.Tab + "ArgName is : " + myMethodMessage.GetArgName(i))
Console.WriteLine(ControlChars.Tab + "ArgValue is: " + myMethodMessage.GetArg(i))
Next i
If myMethodMessage.HasVarArgs Then
Console.WriteLine(ControlChars.Tab + " The method have variable arguments!!")
Else
Console.WriteLine(ControlChars.Tab + " The method does not have variable arguments!!")
End If
' Dispatch the method call to the real object.
Dim returnValue As Object = myType.InvokeMember(myMethodMessage.MethodName, _
BindingFlags.InvokeMethod, Nothing, myObjectInstance, myMethodMessage.Args)
Console.WriteLine("**** End Invoke ****")
' Build the return message to pass back to the transparent proxy.
Dim myReturnMessage As New ReturnMessage(returnValue, Nothing, 0, Nothing, _
CType(message, IMethodCallMessage))
Return myReturnMessage
End Function 'Invoke
End Class
A method message is used to send information to and from remote methods. For example, messages used for remote method calls implement the IMethodMessage interface.
Arg |
Gets the number of arguments passed to the method. |
Args |
Gets an array of arguments passed to the method. |
Has |
Gets a value indicating whether the message has variable arguments. |
Logical |
Gets the LogicalCallContext for the current method call. |
Method |
Gets the MethodBase of the called method. |
Method |
Gets the name of the invoked method. |
Method |
Gets an object containing the method signature. |
Properties |
Gets an IDictionary that represents a collection of the message's properties. (Inherited from IMessage) |
Type |
Gets the full Type name of the specific object that the call is destined for. |
Uri |
Gets the URI of the specific object that the call is destined for. |
Get |
Gets a specific argument as an Object. |
Get |
Gets the name of the argument passed to the method. |
Product | Versions |
---|---|
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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