掛載非引用Assembly中的事件

        private void btnAttachEvent_Click(object sender, EventArgs e)
        {
            if(assembly == null || fireEventForm == null)
            {
                MessageBox.Show("Please click the first button to load the fire event form.");
                return;
            }
            Type fireFarEventFormType = fireEventForm.GetType();
            farEventEventInfo = fireFarEventFormType.GetEvent("SomeEvent");

            EventHandler tempHandler = new EventHandler(this.farEventHandler); // for dynamic method.
            MethodInfo tempHandlerMethodInfo = tempHandler.Method;


            DynamicMethod dynamicMethod = new DynamicMethod(
                "BridgeMethodForAttachEvent", typeof(void),
                new Type[] { typeof(object), assembly.GetType("FireFarEvent.FarEventArgs") },
                this.GetType());

            ILGenerator il = dynamicMethod.GetILGenerator();

            il.Emit(OpCodes.Nop);
            il.Emit(OpCodes.Ldarg_0);
            il.Emit(OpCodes.Ldarg_2);
            il.Emit(OpCodes.Ldarg_1);
            il.Emit(OpCodes.Call, tempHandlerMethodInfo);
            il.Emit(OpCodes.Nop);
            il.Emit(OpCodes.Ret);

            dynamicMethod.DefineParameter(1, ParameterAttributes.In, "object");
            dynamicMethod.DefineParameter(2, ParameterAttributes.In, "e");

            farEventDelegate = dynamicMethod.CreateDelegate(farEventEventInfo.EventHandlerType);
            farEventEventInfo.AddEventHandler(fireEventForm, farEventDelegate);
        }

        private void btnDetachEvent_Click(object sender, EventArgs e)
        {
            if (assembly == null || fireEventForm == null || farEventEventInfo == null)
            {
                MessageBox.Show("Please click the first button to load the fire event form.");
                return;
            }
            farEventEventInfo.RemoveEventHandler(fireEventForm, farEventDelegate);
        }