출처 : http://msdn.microsoft.com/ko-kr/magazine/cc972638.aspx

public void ProcessRequest (HttpContext context) {
    int id;
    if (int.TryParse(context.Request.QueryString["id"], out id)) {
        context.Response.ContentType = "image/gif";
        AdventureWorksDataContext dc = new AdventureWorksDataContext();
        var bytes = dc.ProductPhotos
            .Where(p => p.ProductPhotoID == id)
            .Single().LargePhoto;
        context.Response.OutputStream.Write(bytes.ToArray(), 0, bytes.Length);
    }
    else {
        throw new HttpException(404, "Image not found");
    }               
}