protected override void Rewrite(string requestedPath, System.Web.HttpApplication app)

        {

            // log information to the Trace object.

            app.Context.Trace.Write("ModuleRewriter", "Entering ModuleRewriter");

            // get the configuration rules

            RewriterRuleCollection rules = RewriterConfiguration.GetConfig().Rules;

            // iterate through each rule...

            for(int i = ; i < rules.Count; i++)

            {

                // get the pattern to look for, and Resolve the Url (convert ~ into the appropriate directory)

                string lookFor = "^" + RewriterUtils.ResolveUrl(app.Context.Request.ApplicationPath, rules[i].LookFor) + "$";

                // Create a regex (note that IgnoreCase is set...)

                Regex re = new Regex(lookFor, RegexOptions.IgnoreCase);

                // See if a match is found

                if (re.IsMatch(requestedPath))

                {

                    // match found - do any replacement needed

                    string sendToUrl = RewriterUtils.ResolveUrl(app.Context.Request.ApplicationPath, re.Replace(requestedPath, rules[i].SendTo));

                    // log rewriting information to the Trace object

                    app.Context.Trace.Write("ModuleRewriter", "Rewriting URL to " + sendToUrl);

                    // Rewrite the URL

                    RewriterUtils.RewriteUrl(app.Context, sendToUrl);

                    break;        // exit the for loop

                }

            }

            // Log information to the Trace object

            app.Context.Trace.Write("ModuleRewriter", "Exiting ModuleRewriter");

        }

        public static RewriterConfiguration GetConfig()

        {

            if (HttpContext.Current.Cache["RewriterConfig"] == null)

                HttpContext.Current.Cache.Insert("RewriterConfig", ConfigurationManager.GetSection("RewriterConfig"));

            return (RewriterConfiguration) HttpContext.Current.Cache["RewriterConfig"];

        }

    /// <summary>

    /// Deserializes the markup in Web.config into an instance of the <see cref="RewriterConfiguration"/> class.

    /// </summary>

    public class RewriterConfigSerializerSectionHandler : IConfigurationSectionHandler

    {

        /// <summary>

        /// Creates an instance of the <see cref="RewriterConfiguration"/> class. : IConfigurationSectionHandler

        /// </summary>

        /// <remarks>Uses XML Serialization to deserialize the XML in the Web.config file into an

        /// <see cref="RewriterConfiguration"/> instance.</remarks>

        /// <returns>An instance of the <see cref="RewriterConfiguration"/> class.</returns>

        public object Create(object parent, object configContext, System.Xml.XmlNode section)

        {

            // Create an instance of XmlSerializer based on the RewriterConfiguration type...

            XmlSerializer ser = new XmlSerializer(typeof(RewriterConfiguration));

            // Return the Deserialized object from the Web.config XML

            return ser.Deserialize(new XmlNodeReader(section));

        }

    }