I have 2 projects in the same solution as my Umbraco website BLL.dll and UI.dll (shortened names).

I have the following class in my BLL project that looks like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using umbraco.cms.businesslogic.member;
using umbraco.BusinessLogic;
using umbraco.cms.businesslogic;
using umbraco.cms.businesslogic.web;


namespace MailChimp4Umbraco.Userinterface
{
    public class UmbracoMembershipIntegration :  ApplicationBase
    {
        public UmbracoMembershipIntegration()
        {
            Member.BeforeSave += new Member.SaveEventHandler(Member_BeforeSave);
            Member.AfterSave += new Member.SaveEventHandler(Member_AfterSave);
        }

        public void Member_BeforeSave(Member sender, umbraco.cms.businesslogic.SaveEventArgs e)
        {
            throw new Exception("How can I debug this");
        }

        public void Member_AfterSave(Member sender, umbraco.cms.businesslogic.SaveEventArgs e)
        {
            var test = 1;
        }
    }
}

I have referenced the UI project in the website (as well as tried as post build event to copy the dlls) and put a breakpoints in the above constructor, then attached to the w3wp.exe process from VS to debug.

My breakpoint never gets hit, the exception never gets thrown.  Can anyone help please?