Url重写

        /// <summary>
        /// 重写Url
        /// </summary>
        /// <param name="sender">事件的源</param>
        /// <param name="e">包含事件数据的 EventArgs</param>
        private void ReUrl_BeginRequest(object sender, EventArgs e)
        {
            HttpContext context = ((HttpApplication)sender).Context;
  
            string requestPath = context.Request.Path.ToLower();

            if (判定)
            {                   
                    foreach (SiteUrls.URLRewrite url in SiteUrls.GetSiteUrls().Urls)
                    {
                        if (Regex.IsMatch(requestPath, url.Pattern, RegexOptions.Compiled|RegexOptions.IgnoreCase))
                        {
                            string newUrl = Regex.Replace(requestPath.Substring(context.Request.Path.LastIndexOf("/")), url.Pattern, url.QueryString, RegexOptions.Compiled|RegexOptions.IgnoreCase);
                    
                            context.RewritePath(目标);

                            return;
                        }
                    }
                    context.RewritePath(目标);                
                  }
                }
            }