Use the Asynchronous Power of ASP.NET to Create a Simple, Reusable Page for Displaying a Processing Message

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace AsynchronousProcessing
{
	/// <summary>
	/// Summary description for WebForm1.
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label StatusMessage;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			string redirectPage = Request.QueryString["redirectPage"];
			string processSessionName = Request.QueryString["ProcessSessionName"];
			if (Session["ProcessTime"] == null)
			{
				StatusMessage.Text = "Process has been running for 0 seconds";
				Session["ProcessTime"] = 0;
			}
			else
			{
				Session["ProcessTime"] = Convert.ToInt32(Session["ProcessTime"]) + 1;
				StatusMessage.Text = "Process has been running for " + Session["ProcessTime"].ToString() + " seconds";
			}
	
			if ((bool)Session[processSessionName] == true)
			{
				Session[processSessionName] = null;
				Session["ProcessTime"] = null;
				Response.Redirect(redirectPage);
			}			
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}