Crystal Reports WebPart for SharePoint

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

using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using Microsoft.SharePoint.WebPartPages;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using CrystalDecisions.Web;


public partial class CrystalImageHandler : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // get the Crystal Reports temporary file name
        String strtempImagePath = Request.QueryString["dynamicimage"];
 
        if (strtempImagePath != null)
        {
            // send the temporary image file
            SPWeb thissite = SPControl.GetContextWeb(Context);
            String strsitename = thissite.Site.HostName;
            int iport = thissite.Site.Port;
            String strport = Convert.ToString(iport);
            Response.TransmitFile(@"C:\WINDOWS\Temp\cr_tmp_image__" + strsitename + strport + "\\" + strtempImagePath);
        }
    }
}