<%@ WebHandler Language="C#" Class="Thumb" %>

using System;
using System.Web;
using System.Drawing;
using System.IO;


public class Thumb : IHttpHandler {

  public bool ThumbnailCallback()
  {
    return false;
  }

    public bool IsReusable
    {
        get { return false; }
    }

    
    
    
    public void ProcessRequest(HttpContext context)
    {
        Image.GetThumbnailImageAbort myCallback = new Image.GetThumbnailImageAbort(ThumbnailCallback);

        Bitmap myBitmap;
        Image myThumbnail;
 
        string filePath = Path.Combine(context.Server.MapPath("."), context.Request.QueryString["file"]);        
        myBitmap = new Bitmap(filePath);

        myThumbnail = myBitmap.GetThumbnailImage(100, 100, myCallback, IntPtr.Zero);
        myThumbnail.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
        
        myThumbnail.Dispose();
        myBitmap.Dispose();
    }

}