using System;using System.Collections.Generic;using System.ComponentModel;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace TestDev{    class Program    {        static void Main(string[] args)        {                    System.Windows.Forms.Button btn = new System.Windows.Forms.Button();            btn.Click += new EventHandler(btn_Click);            btn.Click += new EventHandler(btn_Click2);            btn.Click += new EventHandler(btn_Click3);            btn.MouseMove += btn_MouseMove;            btn.MouseMove += btn_MouseMove2;                        PropertyInfo pi = btn.GetType().GetProperty("Events", BindingFlags.Instance | BindingFlags.NonPublic);            EventHandlerList ehl = (EventHandlerList)pi.GetValue(btn, null);//EventClick            FieldInfo fieldInfo = (typeof(System.Windows.Forms.Control)).GetField("EventMouseMove", BindingFlags.Static | BindingFlags.NonPublic);            Delegate d = ehl[fieldInfo.GetValue(null)];            foreach (Delegate del in d.GetInvocationList())                Console.WriteLine(del.Method.Name);                   }        static void btn_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)        {            throw new NotImplementedException();        }        static void btn_MouseMove2(object sender, System.Windows.Forms.MouseEventArgs e)        {            throw new NotImplementedException();        }        static void btn_Click(object sender, EventArgs e)        {            Console.WriteLine("Click1");        }         static void btn_Click2(object sender, EventArgs e)        {            Console.WriteLine("Click2");        }         static void btn_Click3(object sender, EventArgs e)        {            Console.WriteLine("Click3");        }            }}