Refresh Module

using System;
using System.IO;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;

namespace RefreshModule
{
    public class Module : IHttpModule, IRequiresSessionState
    {
        public void Init(HttpApplication context)
        {
            context.AcquireRequestState += OnAcquireRequestState;
            context.EndRequest += OnEndRequest;
            context.PreRequestHandlerExecute += OnPreRequestHandlerExecute;
        }
        
        private void OnPreRequestHandlerExecute(object sender, EventArgs e)
        {

            
            if (ContextHelper.IsRequestPage && 
                RefreshManager.IsPageRefreshed && 
                ContextHelper.IsCustomModuleExist)
            {
                HttpContext.Current.Response.Clear();
                RefreshUIManager uiManager = new RefreshUIManager(ContextHelper.RefreshAttribute.MessageModulePath);
                HttpContext.Current.Response.Write(uiManager.RenderContent(ContextHelper.Handler));
                HttpContext.Current.Response.End();
            }
        }
       
        
        private void OnEndRequest(object sender, EventArgs e)
        {
            if (ContextHelper.IsRequestPage &&
               !ContextHelper.IsRequestMethodGET &&
                    ContextHelper.IsAutoRedirect)
                        HttpContext.Current.Response.Redirect(ContextHelper.Context.Request.RawUrl, true);
            
        }

        private void OnAcquireRequestState(object sender, EventArgs e)
        {
            if (ContextHelper.IsRequestPage && 
                ContextHelper.IsRefreshAttributeDefiened && 
                ContextHelper.Context.CurrentHandler is Page)
            {   
                ContextHelper.Handler.PreRenderComplete += OnPreRenderComplete;
                if (!ContextHelper.IsRequestMethodGET)
                {
                    RefreshManager manager = new RefreshManager();
                    manager.CheckRequest();
                }   
            } 
        }

        private void OnPreRenderComplete(object sender, EventArgs e)
        {
            RefreshManager manager = new RefreshManager();
            manager.RegisterHidenFields(sender as Page);   
        }

        public void Dispose()
        {
            //Do nothing here for now
        }
    }
}