Configurable Aspects for MEF

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Reflection;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Proxies;
using System.Runtime.Remoting.Messaging;

using NCT;
using System.Security.Principal;
using System.Threading;
using System.Diagnostics;
using DynamicDecoratorAOP.Concerns;

namespace SharedLib
{
    public class SysConcerns
    {
        static SysConcerns()
        {
            ConcernsContainer.runtimeAspects.Add("SharedLib.SysConcerns.EnterLog", new Decoration(SysConcerns.EnterLog, null));
            ConcernsContainer.runtimeAspects.Add("SharedLib.SysConcerns.ExitLog", new Decoration(SysConcerns.ExitLog, null));
        }

        public static void EnterLog(AspectContext ctx, object[] parameters)
        {
            StackTrace st = new StackTrace(new StackFrame(4, true));
            Console.Write(st.ToString());
            
            IMethodCallMessage method = ctx.CallCtx;
            string str = "Entering " + ctx.Target.GetType().ToString() + "." + method.MethodName +
                "(";
            int i = 0;
            foreach (object o in method.Args)
            {
                if (i > 0)
                    str = str + ", ";
                str = str + o.ToString();
            }
            str = str + ")";

            Console.WriteLine(str);
            Console.Out.Flush();

        }

        public static void ExitLog(AspectContext ctx, object[] parameters)
        {
            IMethodCallMessage method = ctx.CallCtx;
            string str = "Exiting " + ctx.Target.GetType().ToString() + "." + method.MethodName +
                "(";
            int i = 0;
            foreach (object o in method.Args)
            {
                if (i > 0)
                    str = str + ", ";
                str = str + o.ToString();
            }
            str = str + ")";

            Console.WriteLine(str);
            Console.Out.Flush();
        }
    }
}