How to log each User Controls load time using C# in ASP.Net

Parent page

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="StartStopParent.aspx.cs" Inherits="TestingWeb.usercontrol.StartStopParent" %>
<%@ Register Src="~/usercontrol/StartEnd.ascx" TagPrefix="uc1" TagName="StartEnd" %>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace TestingWeb.usercontrol
{
    public partial class StartStopParent : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void StartEnd_Init(object sender, EventArgs e)
        {
            StartEnd.StartTime.Text = DateTime.Now.ToString();
            Thread.Sleep(1000);
        }

        protected void StartEnd_PreRender(object sender, EventArgs e)
        {
            StartEnd.EndTime.Text = DateTime.Now.ToString();
        }

    }
}

User Control

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="StartEnd.ascx.cs" Inherits="TestingWeb.usercontrol.StartEnd" %>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace TestingWeb.usercontrol
{
    public partial class StartEnd : System.Web.UI.UserControl
    {
        public Label StartTime
        {
            get
            {
                return Start;
            }
        }
        public Label EndTime
        {
            get
            {
                return End;
            }
        }


        protected void Page_Load(object sender, EventArgs e)
        {

        }

    }
}

But the problem here is i need to create init and pre render even for each usercontrol. How do i avoid the code repetition here.how to make generic event handler and call that. Any sample please