handler.cs

using System;
using System.Linq;
using System.Reflection;

namespace TEST
{
    internal class Program
    {
        public interface ITestObject
        {

        }

        public class obja: ITestObject
        {

        }


        public class NetworkHandler: Attribute
        {

        }

        public static class NPCHandlers
        {

            [NetworkHandler]
            public static void Configure(obja packet)
            {
                int x = 0;
                x++;
            }

        }

        public delegate void NetworkEventHandler<ITarget>(ITarget target) where ITarget: ITestObject;


        public static void Main(string[] args)
        {

            foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
            {
                foreach (Type type in assembly.GetTypes())
                {
                    MethodInfo[] methods = type.GetMethods();

                    foreach (var method in methods)
                    {
                        if (method.GetCustomAttributes(true).OfType<NetworkHandler>().Count() > 0)
                        {
                            ParameterInfo[] info = method.GetParameters();

                            // typeof(NetworkEventHandler<>).MakeGenericType(info[0].GetType()).CR.CreateDelegate(method.GetType(), method);


                            Delegate handler = Delegate.CreateDelegate(typeof(NetworkEventHandler<>).MakeGenericType(info[0].ParameterType), method) ;

                            handler.DynamicInvoke(new obja());
                            // NetworkEventHandler<ITestObject> eventHandler =  Delegate.CreateDelegate(typeof(NetworkEventHandler<>).MakeGenericType(info[0].GetType()), null, method);

                        }

                    }

                }
            }
        }
    }
}