C # create a message Interceptor (intercept) 3

Previously, the "intercept" attribute (interceptproperty) was added to the context of interceptattribute. Because interceptproperty inherits icontributeobjectsink, we need to implement getobjectsink (), then we need to create a class that inherits imessagesink as the return value.

In this way, the implementation of the interceptsink class is introduced:

public class InterceptSink : IMessageSink    {        private IMessageSink nextSink = null;        public IMessageSink NextSink        {            get { return nextSink; }        }        public InterceptSink(IMessageSink nextSink)        {            Console.WriteLine(" Call 'InterceptSink' - 'Constructor'  ");            this.nextSink = nextSink;        }                public IMessage SyncProcessMessage(IMessage msg)        {                        Console.WriteLine("method_name: " + msg.Properties["__MethodName"].ToString());            IMessage returnMsg = nextSink.SyncProcessMessage(msg);            return returnMsg;        }        public IMessageCtrl AsyncProcessMessage(IMessage msg, IMessageSink replySink)        {            return null;        }    }

Core Method: syncprocessmessage (iMessage MSG)

In the input parameter MSG, we can find the corresponding data for calling the object method.