Getting page name from URL's

         string sourcePath = Request.RawUrl;/*this for mapped URL*/
            string destPath = Request.Url.AbsolutePath;/*this is for URL*/
            System.IO.FileInfo fInfo= new System.IO.FileInfo(sourcePath);
          string pagename=fInfo.Name.ToString();

getting Querystring value from MAPPED URL

-->> pass like{sample.aspx?id=1}    


 if (Request.RawUrl.LastIndexOf("id=") != -1)
            {
                int index = Request.RawUrl.LastIndexOf("id=");
               string  id = Request.RawUrl.Substring(index + 3);
            }