Tracking Emails for Open/Read

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 etrack
{
	/// <summary>
	/// Summary description for etrack.
	/// </summary>
	public class ImageServer : System.Web.UI.Page
	{
		private void Page_Load(object sender, System.EventArgs e)
		{
			// content type should be resolved programmatically
			Response.ContentType = "image/jpeg";

			if (!IsPostBack) Track();
			Response.WriteFile(GetImageFileByID());
		}

		private void Track()
		{
			string strCustomerID = Request["custID"];
			string strCampaignID = Request["campID"];

			// log the tracking event along with the 
			// customer and campaign id here..

			// optionally log the locatoin and date/time of the 
			// customer..
			string strRemoteHost = Request.UserHostAddress;
			// track the location if possible by the IP address

			string strDateTime = DateTime.Now.ToString();

		}

		private string GetImageFileByID()
		{
			return Request["imageID"];
		}

		#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
	}
}