How to trace system IP Address Using Asp.net ?

using System;
using System.Web;

namespace WebApplication1
{
    public class Global : HttpApplication
    {
        protected void Application_BeginRequest(object sender, EventArgs e)
        {
            // Get request.
            HttpRequest request = base.Request;
    
            // Get UserHostAddress property.
            string address = request.UserHostAddress;
    
            // Write to response.
            base.Response.Write(address);
    
            // Done.
            base.CompleteRequest();
        }
    }
}