Problems with HttpWebRequest/HttpWebResponse and cookies

protected override WebResponse GetWebResponse(WebRequest request)
    {
        WebResponse response = request.GetResponse();
        if (response is HttpWebResponse)
        {
            HttpWebResponse response2 = (response as HttpWebResponse);

            string[] asValues = response2.Headers.GetValues("Set-Cookie");
            if (asValues != null)
            {
                foreach (string sValue in asValues)
                {
                    MessageBox.Show("Cookie: " + sValue);
                    // code in here to modify cookie's path
                }
            }


            foreach (Cookie c in response2.Cookies)
            {
                this._Cookies.Add(c);
            }
        }
        return response;
    }